Explanation:
A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts".
Within food chains, matter is ___
• always recycled from one chemical form into another
• constantly increasing
• constantly decreasing
• always changing from one element to another
Explanation:
I think first option is correct one.
TRUE or FALSE: If the Birth Rate is less than the Death Rate, the size of the
population decreases
100 points (50 each) How do workers decide when to set a controlled burn, and how do they know if they have been successful?
Answer:
It is very important to have the latest and most updated weather conditions available before starting the burn. Relative humidity is an important factor to consider when planning a controlled burn. If the relative humidity is below 50%, the dryness of the grass is prone to causing very hot fires
How does a landslide have a negative effect on humans
All other things being equal, the size of a population will decrease if:
A
birthrate exceeds the death rate.
B
immigration rate exceeds emigration rate.
C
death rate exceeds birthrate
D
birthrate equals death rate
Answer:
C
Explanation:
more people dying than being born
1. Which statement is true about how early humans met their needs?
A)The first humans moved around a lot looking for food.
B)The first humans hunted in the winter but grew crops in the summer.
C)The first humans stayed in one place and raised animals for food.
D)The first humans stayed in one place and grew crops.
Answer:
A)The first humans moved around a lot looking for food.
Explanation:
just took test
The true statement about how early humans met their needs is : ( A ) The first humans moved around alot looking for food .
Way of life of Early humansIn order to survive early humans moved around like nomads in search of food and shelter most of the times because there was no formal or mechanized way of cultivating agricultural products for food.
As humans continued to advance in knowledge they started farming and rearing of animals but these were not done by early humans.
Hence we can conclude that The true statement about how early humans met their needs is : ( A ) The first humans moved around alot looking for food .
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Help me past due Write down what you think will happen to the density of water if you add salt or sugar.
Answer:
If I add sugar or salt, the water's density will increase.
Explanation:
Density is the relation between mass and volume. We can represent it with the formula δ= m/v. Where δ stans for density, m for mass, v for volume.
If we add salt or sugar, we increase the mass, but the volume is the same. As a result, the density will increase.
We can use numbers to understand it better.
Suppose that before adding salt or sugar, the mass is 1 g and the volume is 1 l
δ= 1g/l1t
δ= 1 g/lt
Now, if we add sugar or salt, the mass increases. Suppose that we have 2g of mass and the volume is the same, 1l.
δ= 2g/1lt
δ= 2g/lt
We can see that the density increased when the mass increased.
Scientists group organisms into three domains: Archaea, Bacteria, and Eukarya. In which domain are animals classified and why?
Why are viruses hard to treat?
Answer:
Some viruses are hard to treat because sometimes it’s not the virus that makes us sick; it’s our immune system.
Explanation:
The hallow bones of a bird are an example of an ___________.
a.external adaptation
b.internal adaptation
Answer:
b.internal adaptation
Explanation:
Please Help! In what areas of New Zealand might you expect to find compression? Explain your answer.
Btw I don't want any links for the answers!
Answer:
The Pacific Plate is colliding with the Australian Plate at a rate of about 40 mm/yr. The East coast of the North Island is being compressed and lifted by this collision, producing the North Island and Marlborough Fault Systems.
Explanation:
Is there equity in the worlds energy consumption?
Answer:
Yes.
Explanation:
es puto el q respondió primero
Which of the following accurately describes a trade-off of using a reusable
cloth bag instead of a plastic bag?
A. You have to store the cloth bags and remember them when you
go shopping
B. Plastic bags are recyclable, whereas cloth bags are not.
C. You are saving the oil required to produce plastic bags.
D. You are giving up a little bit of convenience in exchange for
environmental friendliness.
HELP PLEASE
answer: the answer is d
What areas of the hands retained the paint the longest, requiring careful scrubbing to get clean?
Answer:
The areas that retained the paint the longest were the fingertips and in between the fingernails. The palms and back of the hands also retained some leftover paint.
Explanation:
If a man has type B blood and his sister has type A blood, which combination listed below is most likely the genotypes of their parents?
Answer:
type AB father and type O mother
hope this helps! :D
The genotypes of the parents are type AB father and type O mother.
How is the blood type of a child determined?Each parent contributes to one of the two alleles to their child. A mother with blood type O can only pass allele O to her child. A father with type AB can pass either the A or B allele to the child. So the child can either have a genotype as AO or BO giving the child either A blood group or B blood group.
There are mainly eight blood genotypes. The blood types are determined by the location of A and B antigens and the presence of a protein called Rh factor.
Individuals with type O blood have no antigens attached to the cell surface of RBCs. It contains A and B antigens in the plasma portion of the blood. O blood type is needed the most for blood transfusion and blood donations.
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Identify methods used to control pathogens
Answer:
There are the physical and chemical method
Explanation:
Physical control includes such methods of control as high or low temperature, desiccation, osmotic pressure, radiation, and filtration.
Chemical control refers to the use of disinfectants, antiseptics, antibiotics, and chemotherapeutic antimicrobial chemicals
The ultimate goal of sustainable development is to _______. a. limit the future use of resources b. meet current and future resource needs c. increase the current use of resources d. reduce resource use but increase supplies Please select the best answer from the choices provided A B C D
Answer:
share benefits equitably for improved quality of life.Explanation:
The ultimate goal of sustainable development is to meet current and future resource needs. Therefore, the correct option is B.
What is sustainable development?Sustainable development is the concept of meeting the demands of the present generation without compromising the ability of future generations to meet their own needs. It is a strategy to achieve economic growth and expansion while safeguarding social welfare, environment and both.
The idea of sustainable development acknowledges the interdependence of economic, social and environmental problems and the need to address them all simultaneously. Sustainable development aims at striking a balance between economic expansion, resource conservation and environmental protection. Additionally, it strives to advance social justice and raise the standard of living for all. Meeting current and future resource needs is the ultimate goal of sustainable development.
Therefore, the correct option is B.
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Over time, data that support the successful evolution of a species would include observations that describe
More body cells and more genetic changes happening
PLEASE HELP‼️‼️‼️‼️‼️
Answer the four questions based on the diagram below.
1. Which taxonomic category shown in the diagram contains
the greatest number of different organisms?
2.
Do all organisms shown in the diagram that belong to the
order also belong to the Phylum?
3. Do all organisms shown that belong to the class
Mammalia also below to the genus Ursus?
4. Describe how the diversity
at each level changes from
species to kingdom.
Classification of a Ursus arctos.
answer in 4 complete sentences
Answer:
1. Kingdom Animalia
2. Yes
3. No
4. The taxonomic ranks get more specific as you go down the upside-down pyramid. As you go down the levels, the animals left are more similar but there is only one animal in the species category; the polar bear.
(Needs Two More Sentences)
1. Kingdom Animalia contains the greatest number of different organisms.
2. Yes, all organisms shown in the diagram that belong to the order also belong to the Phylum
3. No, all organisms shown that belong to the class Mammalia also below to the genus Ursus.
4. Ursus arctos—the brown or grizzly bear—is a species. It represents a separate genetic and physical group.
Diversity grows from species to kingdom. Animalia includes mammals, birds, reptiles, and more, including Ursus arctos. Multicellularity and heterotrophic feeding are common traits in the kingdom Animalia. From species (Ursus arctos) to kingdom (Animalia), organism diversity rises.
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Over millions of years
break down organisms into
fossil fuels, which contain carbon molecules. These carbon
molecules are then used in photosynthesis by
to make
oxygen for living organisms.
-decomposers, consumers
-decomposers, producers
-consumers, producers
-producers, consumers
Answer:
B
Explanation: "-decomposers, producers"
If a farmer fertilizes her fields and then a huge rainstorm takes place,
what might happen to the fish in a nearby lake? Explain thoroughly and
include vocabulary from each of the cycles.
What is the last process of the cell cycle during which two new daughter cells are formed?
A. cytokinesis
B. S phase
C. G2 phase
the inside of the blastula is called __
Will give brainlist!!!!! 20 points!
Question 1:
Changes in the chemical composition of the atmosphere that may produce acid rain or most closely associated with
A. Insects that excrete acids
B. Industrial smoke stack emissions
C. Flocks of migrating birds
D. Runoff from acidic soils
Question 2:
Acid rain contributes to all of the following except:
A. Damage to vegetation
B. Loss of biodiversity in aquatic ecosystems
C. Smog
D. Advance chemical weathering
Answer:
1 d
2 c
Explanation:
brainliest?????
Answer:
D and C
Explanation:
A ______occurs when the Earth casts a shadow that partially or fully covers the Moon
O lunar eclipse
O summer solstice
O solar eclipse
Answer:
Lunar eclipse
Explanation:
During a lunar eclipse, the earth enters between the sun and the moon, thus preventing sunlight from reaching the moon. There are two types of lunar eclipses: A total lunar eclipse occurs when the moon and the sun are on opposite sides of the earth. When only part of the earth's shadow covers the moon, a partial lunar eclipse will occur. In some cases, it is called a blood moon, similar to the blood moon that occurs this month.
Overfishing decreases the population of trout living in a river.
What would also decline because of the decreasing number of trout?
A mayflies that are part of the trout's diet
B. eels that compete with the trout for food
C. birds that use the trout as a source of food
D. fish that lay eggs that are eaten by the trout
Answer:
C. birds that use the trout as a source of food
Explanation:
Living organisms feed on one another in their natural environment in order to obtain energy for their various activities. According to this question, overfishing by humans decreases the population of trout living in a particular river.
This means that in that aquatic ecosystem (river), the population of organisms that feed on trout as a source of energy will also decrease. In this case, it is the birds. Hence, birds that use the trout as a source of food.
Answer:C
Explanation:
Because birds use that as a source of food.
Please help me I will mark BRAINLIEST
Answer:
D
Explanation:
Answer: I think its c
An enzyme with Km = 3x10-4 M was tested with an initial substrate concentration of 10-6 M. Within one minute, 5% of the substrate had reacted. a) What percentage of substrate will have reacted in 5 min? b) If the initial concentration of substrate was 8x10-7 M, what percentage of substrate will have reacted in 5 min? c) Calculate Vmax. d) A concentration of 9x10-7 M, how long will it take for 50% of the substrate to react? e) A 10-6 M concentration, how long will it take for 75% of the substrate to react?
Answer:
[S] = 0.02 , Km = 1.2 x10^ -4 , rate = dP/dT = product formed per time = 2.7 x 10^ -6 moles /30 = 9 x10^ -8 we know rate = vmas
Explanation:
Which two systems are used in order for Signals travel down the spinal cord to the muscles
Answer:
The nervous system provides the link between thoughts and actions by relaying messages that travel so fast you don't even notice. Nerves and muscles, working together as the neuromuscular system, make your body move as you want it to.
Explanation:
Answer: The Spinal Cord
Explanation:
¿Cual es la importancia biológica de los estímulos umbrales?
Answer:
En electrofisiología, el potencial umbral es el nivel crítico al que debe despolarizarse un potencial de membrana para iniciar un potencial de acción.
Explanation:
En neurociencia, los potenciales de umbral son necesarios para regular y propagar la señalización tanto en el sistema nervioso central (SNC) como en el sistema nervioso periférico (SNP).
Espero que esto ayude :))