Answer:
c. Increase in nutrient levels
b. Algal blooms
d. Algae dies, microbes decompose using oxygen
a. Dead zones (hypoxic zones)
Explanation:
The term eutrophication refers to the enrichment of surface water with nutrients. This process is related to human pollution activities.
Eutrophication is the biological process that generates in water by an oversupply of nutrients or organic matter. This matter, mainly compounded with nitrogen or phosphorous, favors the phytoplankton multiplication (microscopic plants growing on the water surface) and other aquatic plants. This overgrowth leads to an enhance in primary productivity.
Little by little begin sedimentation is caused by the death of some vegetable organisms that sink in the bottom. These sediments rich in organic matter suffer decomposition in the presence of oxygen.
When oxygen disappears, anaerobic bacteria act and produce fermentation.
On the surface, plants and phytoplankton keep growing, creating a mantle that impedes the light reach deeper areas. The phytoplankton overgrowth on the water surface and the fermentation processes in the bottom originate toxic compounds that damage the animals. Animals die, creating more sediments in the bottom where there are anaerobic conditions.
Decomposition and fermentation processes increase, producing a bad smell.
The result of eutrophication is the stratification of the water mass:
· First superficial layer, the overgrowth of blue-green algae, produces toxins and interrupts the pass of light to deeper areas. The surface then becomes warmer.
· The second layer might have oxygen available for the animals.
· In the third layer, there is no oxygen, so life is impossible for animals or plants.
· In the fourth layer, there are animals and plant remains in the process of sedimentation.
· At the bottom, there are organic matter and anaerobic bacteria in charge of decomposition and fermentation, through which they produce toxic gases and smell.
Help me with this please
Answer:
C. Protective Barrier against infection and disease
Explanation:
The skin does not send chemical messages, nor electrical, and the skeletal and muscular system is what allows movement and structure, which leaves C as the answer because it is what protects outside diseases from getting into your blood or arteries
Hope this helps!
Effects of heart disease
What are the effects of heart disease ?
Answer:
hope the answer helps this is what I understand
if your own words whats the definition to gene pool
How external and internal factors contribute in maintaining homeostasis in nature?
Answer:
This process ensures the bodily functions and chemicals are kept in a state of balance which in return allows the body to function optimally
Explanation:
Why do you think analogous structures would cause Evolutionary biologists problems when trying to determine the relatedness of certain species?
Answer: Two analogous structures are similar in phenotype and developed to perform the same function, despite not being inherited from a common ancestor. As so unrelated species may look related due to having analogous structures.
Explanation:
Analogous structures evolved due to Convergent evolution. It means that structures are similar in functions but differ in morphology.
What do you mean by Species?A biological species is a group of organisms that can reproduce with one another in nature and produce fertile offspring.
Analogous structures are similar in structure that evolved independently in two living organisms to serve the same purpose. Due to their approx similarity sometimes evolutionary biologists face problems when trying to determine the genetic relatedness of certain species.
Therefore, Analogous structures evolved due to Convergent evolution. It means that structures are similar in functions but differ in morphology.
To learn more about Analogous organs, refer to the link:
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All stars
reflect light from the sun.
b. appear to wander off their star paths.
a.
c. produce their own light.
d. All of the above.
Answer:
option c. produce their own light.
If two first-generation self-pollinating plants are crossed, Pp × Pp, what is the probability that offspring plants will show the recessive trait, pp?
Answer:
25%
Explanation:
In a punnett square, one offspring (25%) is PP, 2 (50%) are Pp, and finally the last one (25%) is pp.
Some one please help
1. Cell
2. Blood
3. Cells
4. Epithelial
5. Tissues
6. Stomach
7. Organs
8. Digestive
9. Organism
10. Human
Answer:
1. cell
2. blood
3. cells
4. epithelial
5. tissues
6. stomach
7. organs
8. digestive
9. organism
10. human
Explanation: Hope this was helpful....
3. You are studying a population of pangolins (a scaly anteater), and you determine that there are two scale phenotypes: a thick scale that is dominant to a thin scale. You also find that thick-scaled individuals are better able to survive encounters with predators.
What evidence would you need in order to determine if this selective advantage is changing the population? (1 point)
-The number of individuals displaying each phenotype in the current generation.
-The number of individuals displaying each phenotype in the offspring.
-The number of individuals that survive predator encounters.
-The number of individuals displaying each phenotype in both the current generation and the offspring.
Answer:
The number of individuals displaying each phenotype in both the current generation and the offspring.
Explanation:
The number of individuals displaying each phenotype in both the current generation and the offspring. The correct option is 4.
What is phenotype?The phenotype is the set of observable characteristics or traits of an organism in genetics.
The term encompasses the organism's morphology, developmental processes, biochemical and physiological properties, behaviour, and behavioural products.
To see if the thick scale phenotype's selective advantage is changing the population, we must compare the frequency of the thick scale phenotype in the current generation to its frequency in the next generation.
This would necessitate data on the number of people who exhibit each phenotype in both the current generation and their offspring.
As a result, the evidence we require to determine whether the selective advantage is changing the population is "the number of individuals displaying each phenotype in both the current generation and offspring."
Thus, the correct option is 4.
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GIVING BRAINLIEST!!!
Which air temperatures usually result in snow and other forms of solid precipitation?
A) Freezing air temperatures
B) Cool air temperatures
C) Hot air temperatures
D) Warm air temperatures
Answer: B) Cool air temperatures
Explanation: Snow requires temperatures at the ground to be near or below freezing.
—PLEASE HELP QUESTION IS IN THE PICTURE—
Answer:
integumentary,and nervous
Explanation:
those two answer choices fit the function and systems involved in the chicken wing.the other two are way off
which of the following is not considered a natural resource a.plastic b.gold c.titanium d.coal
Answer:
Gold
Explanation:
HELPPPP PLS ASAP
In sexual reproduction, a zygote is
A the product of fertilization of an egg by sperm
B the gamete responsible for the sex of the offspring
C.an egg that has not been successfully fertilized
D the final stage before the birth of an offspring
Answer:
A the product of fertilization of an egg by sperm
Answer: A
the product of fertilization of an egg by sperm.
Explanation:
Hope this helped
The ovary controls which of the following hormones?
a. Estrogen b. Follicle stimulating hormone c. c. Luteinizing hormone d. Progesterone
Answer:
estrogen and progesterone
Plzz Help!! Thanks!!
okay this is the question please answer if you know it because I'm not sure if it's a. or d. and thxxx :)
Answer:
D!!
Explanation:
Can you please help?
Answer:
A
Explanation:
as water heats the particles move faster and expand the opposite for cold
it is an imaginary straight line going from the north to the south pole
An equator, is the definition of that!
Answer:
Prime meridian or the Greenwich meridian
I am found in plant cells. I am rigid, strong & stiff. I give support to the plant cell. I give the cell it's box shape
chlorophyll
mitochondria
cell membrane
cell wall
Answer:
cell wall
Explanation:
if it was a animal cell it would be a cell membrane
what is the endocrine system and how does it work
Yellow-eyed salamanders have been cited as an example of Batesian mimicry; their orange body color and yellow eyes mimic the coloration of the toxic California newt. Although the salamanders are palatable, their mimicry of a unpalatable species tends to prevent predators from attacking. In a follow-up study, Kuchta et al. observed the reaction of Western scrub jays (predators with toxic newt experience) when presented with both a yellow-eyed salamander and a closely related species after being presented with a toxic newt. What was significant about this study
Answer:
It was a follow-up controlled experiment that showed how a species can influence selection in another species.
Explanation:
A follow-up (cohort) study is a type of study followed over time in order to determine the development of a particular outcome. Moreover, a controlled experiment is one in which conditions are controlled by the researcher, and thereby it is easier to determine the incidence of the outcome. In the case above described, researchers performed a follow-up controlled experiment in which they measured how a species can influence selective processes undergone by other species.
Give reasons why local efforts are required to conserve biodiversity
Answer:
Healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. ... Biodiversity is the key indicator of the health of an ecosystem. A wide variety of species will cope better with threats than a limited number of them in large populations.
Plzz Help!! Do not do it for the points plz i really need help on this!!!!!!!
Answer:
All alleles on the X chromosome are dominant
Explanation:
This is because the X chromosome is large and contains many more genes than the smaller Y chromosome. In a sex-linked disease, it is usually males who are affected because they have a single copy of X chromosome that carries the mutation.
Explain these terms as related to fossils.
Inference
reconstruction
Explanation:
Resconstruction: a detailed drawing or reconstruction is made of the skeleton.
Inference evidance or reasoning for a fossil. Pls Give me Brainlyest
Answer:It is the putting together of fossils
Explanation:
if one parent has two dominant alleles and another parent has two recessive alleles, the offspring will have____. (Hint: Draw a Punnett square for parents TT and tt.)
A. The recessive phenotype.
B. The dominant phenotype.
C. Two dominant alleles.
D. Two recessive alleles.
Waste water is"________" by bacteria in the secondary treatment.
killed
digested
ignored
heated
explain why fermentation wold take over and not the krebs cycle.how long would it last?
Answer:
Fermentation takes over the krebs cycle in anerobiotic conditions. The lack of oxygen prevents oxidative phosphorylation and the formation of new oxidized compounds which can only be reformed through the reduction of pyruvate to lactate: through this process glycolysis can continue to function and we can have the production of ATP. The problem is that only 2 ATPs are formed: this is not enough to sustain the life of the cell so, over a period of time that varies from cell to cell (for example the myocyte survives for 40 min, nerve cells fastly die in ischemia), it will go to death if no new oxygen arrives.
What is feedback in a system?
the balance of competing factors in a system
the definition of what is part of the system and what isn't
the behaviors of the different components of a system
the regulation of a system by the output
Answer:
the regulation of a system by the output
Explanation:
just took test
is sleep deprivation inherited or spontaneous
Answer:
inherent
Explanation:
its most likely inherited
1. Select the correct pairing of organism to its type
A.Cow - producer
B.Grass - decomposer
C.Fungi - primary consumer
D.Bobcat - secondary consumer
Answer:
d
Explanation:
trust me
Answer: D.Bobcat - secondary consumer
Explanation: secondary consumers eat primary consumers like squirrels and some rodents.