The Chesapeake Bay, which is along the coast of the Eastern U.S., is the largest estuary in the country. Many rivers, including the Potomac, empty into this section of the Atlantic Ocean.

During the 1970s, areas of the bay were found to have low levels of oxygen and could not support life. What was the cause of this problem?

Answers

Answer 1

Answer: B. High levels of nitrogen and phosphorus from agriculture runoff, sewage, and etc

Explanation:

i did it off study island


Related Questions

Flowering plants and pollinators, such as bees, have adapted together over time in ways that enhance each other's survival. The bee obtains nectar from the flower How does the flower benefit from this relationship?
O It gains food
O
It is pollinated
O Its seeds are dispersed.
It receives growth hormones

HELP PLEASE!!!

Answers

Answer:

it is pollinated

............

Answer: it’s pollinated

Explanation:

i took the test lol

Please help!!!! 20 points

Answers

Answer:

Producers: Leaves and the other plant thing (i don't know the name of it)

First-level consumers: Squirrel, grasshopper, rabbit, rat

Second-level consumers: Frog, rat

Third-level consumers: Fox, owl, snake

Herbivores: Grasshopper, rabbit, squirrel

Carnivores: Frog, fox, snake, owl

Omnivores: Rat

A lamprey eel fastens itself to a host fish, such as a lake perch, and feeds on it. When the fish dies, the lamprey finds another host. Which type of symbiosis is this?​

Answers

The relationship between the two is harmful and parasitic

What are the "energy factories" within a plant cell?

Answers

mitochondria is the energy factors in a plant cell! hope this helps

The Venn diagram provided compares and contrasts two domains of living things. Both domains include species of
bacteria. Select ALL of the terms which could be applied to only group A in the diagram.
A)
ancient
B)
unicellular
may be pathogenic
D)
live everywhere in the environment
E)
cell wall is made of peptidoglycan

Answers

Answer:

C,D,E

Explanation:

i just did it and got them right.Hope this helps :}

This group of Bacteria can be pathogenic, ubiquitous in the environment whose cell walls are composed of peptidoglycan. So, the correct options are C, D and E.

What is Bacteria?

Bacteria are defined as ubiquitous, mostly free-living organisms that contain a single biological cell that constitute a large domain of prokaryotic microorganisms. Bacteria are a few micrometers in length that were among the first life forms to appear on Earth, and are present in most of its habitats.

Some bacteria are harmful that serve a useful purpose that support many forms of life, both plant and animal, and are used in industrial and medicinal processes. This group A mentioned in the above example of Bacteria can be pathogenic, ubiquitous in the environment whose cell walls are composed of peptidoglycan.

So, the correct options are C, D and E.

Learn more about Bacteria, here:

https://brainly.com/question/8008968

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Which three organ systems work together to take in oxygen and other
nutrients and deliver them to an animal's body cells?
A. Respiratory, because it takes in gases from the external
environment
B. Circulatory, because blood absorbs nutrients and carries them to
other cells
c. Nervous, because it controls the body functions and responses to
stimuli
D. Digestive, because it breaks down the nutrients in food into
substances that can be used by cells

Answers

Answer:A, B and D

Explanation:Respiratory takes in oxygen and digestive absorbs nutrients from the food while the circulatory deliver those through the entire body.

A B D im on the exam

How is the food you choose to eat used to create energy? referring to cellular respiration

Answers

Answer:

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

Which organization would not have to abide by OSHA guidelines?

a. nuclear plant
b. religious-based corporation
c. family run business with only local employees
d. all organizations must abide by OSHA guidelines

Correct ans: Nuclear plant :)

Answers

Answer:

b. religious-based corporation

GIVING BRAINLIEST ANSWER CORRECTLY FOR 40 POINTS
List 3 people from the history of biotechnology and write one sentence about each persons contribution​

Answers

Answer:

Karl Ereky

Explanation:

He discovered it

The typical human adult uses about 160 g of glucose per day, 120 g of which is used by the brain. The available reserve of glucose (~20 g of circulating glucose and ~190 g of glycogen) is adequate for about one day. After the reserve has been depleted during starvation, what other sources can be used to produce glucose

Answers

Answer:

Fats and proteins that are present in liver, kidneys, and muscles.

Explanation:

When the reserve of glucose is used by the body during starvation, our body uses fats and proteins that are present in liver, kidneys, muscles etc and convert these fats and proteins into glucose. There is high amount of fats and proteins present in our body which can be used when the glucose reserves depleted from the body during starvation so we can conclude that the fats and proteins are the sources that can be used to produce glucose for the body.

In 1847, the German biologist Christian Bergmann noted that mammals and birds living at higher latitudes (farther from the equator) are on average larger and bulkier than related species found at lower latitudes. Suggest an evolutionary hypothesis to explain this observation.

Answers

Answer:

not quite sure how to do the hypothesis but its likely to be something to do with the fact that they need more fat and muscle due to the thinner atmosphere as respiration is harder to occur.

Explanation:

An individual with two different alleles for the same gene is
called

Answers

Answer:

an individual with two same alleles genes is called a heterozygous

Kudzu, a plant native to eastern Asia was introduced into America in 1876. In 1935, Kudzu was planted along southern roadways to control soil erosion. Adding a foot of vine a day in the spring and summer

kudzu quidity grew out of control. Why can introducing a new species to an existing ecosystem often be a disaster?

A The new species can create excess nutrients in the soil that can damage native species

The series can harminative anime and damage the ecosystem

Answers

Answer:

Due to lack of biological gent.

Explanation:

Introducing a new species to a new ecosystem often leads to a disaster because of the absence of bioagent for that species. Bioagent are those organisms which has the ability to control other organisms by feeding on them. A new species does not make problem in its old or original ecosystem due to the presence of controlling agents but in the new ecosystem there is no bioagent that can stop its growth so that's why sometimes the introduction of new species leads to a disaster.

Details are underlated or irrelevant details to the topic at hand

Answers

extraneous!!!!!!!! no cap

. Students decide to remove the litter from an abandoned park and plant trees. Which of the following observations provides the best evidence that the action of the students has had a positive effect on the health of the park ecosystem?
A. The number of human visitors decreases.
B.The level of yearly precipitation increases.
C.The number and diversity of animals increases.
D.The average daily high temperature decreases.

Answers

Answer:

c

Explanation:

What needs to happen in order for two populations to be isolated?

Answers

Answer:

Isolation means that organisms of the same species are separated, and happens when there is something between the organisms that they can't cross.

Explanation:

Organisms become isolated as a result of environmental change. The cause of isolation can be gradual, like when mountains or deserts form, or continents split apart.

Need help with this will make brainliest if right
Research on the different thermal conductivities of different materials. From the different values of the thermal conductivities give seven example of conductors and seven example of insulators

Answers

Answer:

conductors are like silver, gold, copper, steel, sea water, and iron. insulators are rubber, glass, oil, diamond, dry wood, and insulation.

Explanation:

Describe the 6 phases of developing a vaccine

Answers

Answer:

Exploratory stage

Pre-clinical stage

Clinical development

Regulatory review and approval

Manufacturing

Quality control

Explanation:

Internet

Explanation:

there are many stages to a vaccine

many come from ... developing symptoms

in which some case can come from

some quality control, pre-clinical control or even exploratory stage

HELP! whoever does these gets brainliest!!

Answers

Answer:

blood crime scene arson murder footprint

What is structure 1?

Answers

Answer:

Bro give a chart or something not just a question with no info.

Explanation:

a plane mirror is useful for seeing

Answers

Oh.... very nice! Yes seeing is nice

Can viruses live through mutation and natural selection

Answers

Answer:

sure why not

Explanation:

as the virus mutates, it may increase, or lessen the chance for the virus to survive a battle against its host. like your regular living organisms (though keep in mind viruses are not considered living), some survive and some die due to natural selection and mutation.

I am pretty sure that the answer is yes since viruses have been around for a long time :))

After a fire in a Florida pine forest, new growth occurs. Which process allows this to happen?
A succession
B
competition
С
predation
D
symbiosis

Answers

Answer:A) succession

Explanation:

Seeds inside the closed vessel does not give new seeding ,why?​

Answers

Answer:

It is not able to produce a new seedling as it requires sunlight and air to prepare its own food and the process of photosynthesis does not occur. So, the seed inside the closed vessel does not give new seedling.

Explanation:

Answer:

It is not able to produce a new seedling because it needs the sun and air to prepare it's own food and the process of photosynthesis does not occurs

Explanation:

Why is it important for nitrogen to be more abundant in our atmosphere than oxygen?
A. Oxygen is only breathable if diluted with nitrogen.

B. Nitrogen and oxygen combine to produce weather that is essential for life.

C. Oxygen must be diluted because it is a highly combustible gas.

D. Nitrogen is a heavy molecule that pulls oxygen, a light molecule, to the surface for oxygen-dependent life to use.
(also report this idiot called americanlove if spot him, for the last 2 hours he has been going to almost every post just to steal points for no reason)

Answers

Answer:

Choice C

Oxygen must be diluted because it is a highly combustible gas.

Oxygen must be diluted because it is a highly combustible gas is important for nitrogen to be more abundant in our atmosphere than oxygen.

Why nitrogen is important?

Nitrogen is extremely important to living material. Plants, animals and humans could not live without it.

The major source of nitrogen is the atmosphere. It exists as a colorless, odorless, nontoxic gas and makes up about 78 percent of the atmosphere. Nitrogen is also found in the Earth's crust as part of organic matter and humus.

Our atmosphere's nitrogen gas is a molecule made up of two nitrogen atoms. This kind of nitrogen can't be utilized by plants directly. Before it can be utilized by plants, nitrogen needs to be transformed into other forms.

Therefore, Oxygen must be diluted because it is a highly combustible gas is important for nitrogen to be more abundant in our atmosphere than oxygen.

To learn more about Nitrogen, refer to the link:

https://brainly.com/question/19938608

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A striped billiard ball rolls and strikes a motionless solid billiard ball. The solid ball then begins to roll.

Which best describes the change in the magnitudes of momentum for the balls?
The change is greatest for the solid ball.
The change is greatest for the striped ball.
The change is the same for each ball.
The change depends on the direction each ball rolls.

Answers

Answer:

The change is greatest for the solid ball

PLASE HURRY!!!!
Cross a parent with genotype Rr and the other parent with genotype Rr...make a
punnett square.
Rrx Rr
What is the genotypic ratio of the offsprings?
-4:0
-2:2
-1:2:1
-1:1:1

Answers

Answer:

   R    r

R  RR  Rr

r Rr     rr

Explanation:

1:2:1 is the genotypic ratio

Very rapid (i.e. in 1-2 seconds) responses to maintain normal blood pressure during a sudden decrease in blood volume by hemorrhage can be initiated by Group of answer choices secretion of ADH from the posterior pituitary. vasoconstriction of capillaries. baroreceptors in the aortic arch. vasodilation of precapillary sphincters. Two of the answers are correct.

Answers

Answer:

vasoconstriction of capillaries.

baroreceptors in the aortic arch.

Explanation:

Vasoconstriction of capillaries and baroreceptors in the aortic arch are the two quick responses of body to maintain normal blood pressure during hemorrhage. Vasoconstriction is very necessary for lowering acute blood loss during hemorrhage means escape of blood from a ruptured blood vessel as well as maintain body heat and arterial pressure. The function of baroreceptors is to respond to the change in the tension of the arterial wall when blood pressure changes.

A rock is an (blank) of minerals.

Answers

A rock is an aggregate of minerals

YALL PLEASE HELP 90 points ;(

Answers

Answer:

it is too small so i can't see it

Answer: Could you make it bigger because I don't have my glasses. Thx and will answer when problem is solved.

Explanation:

Other Questions
Read sentence 13 from the passage.Although Milo could not figure out what we were saying, the look of sheer awe and wonder on our faces were enough totell him that we were spellbound and happy.What change needs to be made in sentence 13?A. Change sheer to shear.B. Change sheer to seer.C. Change were spellbound to are spellbound.ODChange were enough to was enough. An example of geeking out is when someone: O A. plays games with friends on weekends. B. creates an online network to rate videos. c. sends a sibling a link to a funny website. O D. researches the population of various cities. A chunk of zinc is added to a solution of gold (III) nitrate to extract the gold. The reaction forms,zinc nitrate and the precipitate gold. 23. What is the value of x? Use a scientific calculator to calculate [H+] for the following pH values:7 (a neutral solution)5.6 (unpolluted rainwater)3.7 (first acid rain sample in North America)How many times higher is the concentration of H+ in the Hubbard Brook sample than in unpolluted rainwater? Help me!!! Whats the answer? Find y to the nearest hundredths place Help me answer the question Please help, it would really be appreciated. Thank you!Learning a language opens doors to a world of opportunity. Of course, in order to really benefit from your studies, youll need to do more than just complete assignments. Youll need to set habits that will tie you to French and its cultures even beyond the classroom. Students who become lifelong learners of French have some basic characteristics and habits that you should develop if you want to get the most from your experience learning French. Here are some of them:Lifelong learners:Have friends with whom they regularly converse in the target language. (This could be friends in school, neighbors or friends in the community.)Regularly get information from target language sources, such as newspapers, magazines, Internet, French related news groups (with parents approval), TV programs, radio, etc.Participate in activities of the target culture (celebrating holidays, seeing movies or plays of/in the target culture, preparing or eating dishes from the target culture, reading books or magazines from the target culture, etc.)Someone who has developed these habits is on the way to becoming a lifelong learner. These types of habits reinforce a strong connection to the language and culture and develop a love and better understanding of that culture.Think for a minute about the resources available. Do you have friends who are native French speakers? Do you ever watch French channels on television? You can probably think of several online sources. Maybe you have some stores or restaurants in your community that are run or frequented by French speakers. Also think about when you could do this on a regular basisremember that its setting the habits that will make the most difference.Using the table below as a guideline, write what you plan to do. For the Language or Culture Resources column, try to identify three different resources: 1. A friend or contact, 2. An information source, and 3. A cultural activity. In the What I Will Do column, describe as specifically as you can what you will do. And in the When I Will Do It column, write when you plan on doing these activities. See the sample below to see how you might fill out your own table.You will have opportunities to follow up and report on your regular practice of engaging French resources close to home. You will be asked in a follow up assignment to report on what you have done. If you are still unsure where to begin, ask your teacher for additional ideas that can help get you started. Regardless of how you go about making your French cultural connection, be sure to make a plan and to think about a longer-term strategy for getting the most from your time with your chosen resources. HELP I'LL GIVE BRAINLIEST DUE BY 11:59!!!!!!!I FELL BEHIND AND I NEED TO GET THIS DONE!!!!!!ACCESS 2021 AP BIOLOGY Question 2 of 10Which of the following best describes the slope of the line below?A. NegativeOB. ZeroC. Undefinedo D. Positive A quadrilateral has the following coordinates:Point A: (4, 7)Point B: (4, 7)Point C: (4, 7)Point D: (4, 7)What is the length of side CD? A.Food Shortages in TexasB.Texas is an Oil StateC.Construction of a Transcontinental RailwayD. Decline of the Cattle Industry HELP!! WILL GIVE BRAINLIEST!!As old central business districts and industrial zones in more developed countries lost businesses and employment in the mid- to late twentieth century, suburban development expanded. Which of the following types of cities resulted from rapid suburban growth and the expansion of retail areas, office developments, business centers, and corporate headquarters to provide jobs and services in suburban areas?A. MegalopolisesB. Financial districtsC. State capitalsD. Edge citiesE. Manufacturing zones What is the y-intercept of a line through (2, 7) and perpendicular to thegraph of y=-3/2x+6 Math help 20 pointsssssssss SO I NEED HELP PLS HELP IM STUCK ON IS MEAN QUESTION!!!PLS HELP! What type of word group is the following?Walking down the street A. Phrase B. Dependent Clause C. Independent Clause D. Dependent Phrase The number of people using an older version of a spreadsheet program decreases at a rate that is proportional at any time to the number of people still using the version at that time.There were 10,000 people using the older version of the spreadsheet program when the new version first came out. The number of people still using the older version decreases by 20%, percent every 6 months. A seagull is flying 11 meters above the water. Directly below the bird, a fish is swimming 31 meters under the surface. What is the total difference in distance between the bird and the fish? A 11 B 20 C 31 D 42