1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ELEN [110]
3 years ago
14

Why is tall grass prairie north america's rarest biome? historically it only occurred in a very tiny region of north america. be

cause over 90% of this biome has been converted to agriculture. global warming has resulted in the conversion of most tall grass prairie to short grass prairie. pollution has degraded most of our tall grass prairie region?
Biology
1 answer:
OLEGan [10]3 years ago
5 0
The answer is - because over 90% of this biome has been converted to agriculture.

This biome has been much larger before the development of the agriculture in this part of the USA, but because this biome provided large territories with deep fertile soil and predominantly lowland areas, people started using it for agriculture because it was the most suitable for that. So little by little, the biome was declining and more and more of it was becoming agricultural land.
You might be interested in
Researchers noted that when a lysine residue on a histone is acetylated, its side chain becomes neutral in charge. Combined with
lesantik [10]

Answer:

The correct answer is A) Histone deacetylation generally decreases gene expression.

Explanation:

Histones are the proteins that are responsible for the condensation of chromatin, which is directly linked to the capacity that a gene has to be expressed. The more condensed a gene is, the less expressible it becomes.

In order to regulate the gene expression, histones can suffer from many modifications that can change their conformation and the expressiveness of specific genes.

<u>Histone acetylation is linked with an increase of gene expression; while deacetylation and methylation decrease gene expression.</u>

3 0
3 years ago
Without genetic variation, the mechanisms of evolutionary change will not occur. There are several sources of genetic variation
MissTica

Answer: A, B, and D

Explanation: I just took the test

6 0
3 years ago
Pyramids depicting the number of organisms or biomass may be inverted, upright, or even diamond-shaped.
Delicious77 [7]

Answer:

The correct answer is - as energy lost at every trophic level.

Explanation:

In any ecological ecosystem the energy pyramids always upright unlike other pyramids such as biomass showing the number of organisms, that can be diamond shape, inverted or upright.

The main reason behind this is due to the fact that it is only a pyramid in the ecosystem that always unidirectional in the food chain which is always some energy lost with an increase in the trophic level in the food chain. This loss of energy always gets back to the atmosphere in each step of the food chain.

3 0
3 years ago
Can you identify how chemicals cycle in an ecosystem?
natulia [17]
Nutrients move through the ecosystem<span> in biogeochemical </span>cycles<span>. A biogeochemical </span>cycle<span> is a circuit/pathway by which a </span>chemical<span> element moves through the biotic and the abiotic factors of an</span>ecosystem<span>. It is inclusive of the biotic factors, or living organisms, rocks, air, water, and </span>chemicals<span>.</span>
7 0
3 years ago
How much available energy is lost when a carnivore consumes an herbivore
AysviL [449]
Each time an organism is consumed, 90% of the energy is lost as heat. that leaves only 10% for the carnivore
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following occurs when the heart forcefully contracts?
    12·2 answers
  • In an organism containing many cells how is the work of the cell perform
    6·1 answer
  • What percentage of fungi uses photosynthesis to make their own food? 0%, 15%, 50%, or 100%
    11·1 answer
  • How can power plants be created in ways that reduce pollution
    9·2 answers
  • The client experienced a traumatic event in the past that has caused chronic nightmares in which the event is relived. The clien
    10·1 answer
  • A swimming pool holds 2,640,000 quarts of water.<br><br> How many gallons does it hold?
    15·1 answer
  • Which of the following is an example of ecological succession?
    9·1 answer
  • What is the term used to describe an organic cofactor​
    6·2 answers
  • Transcribe the following DNA sequence into mRNA: ATT ATG GAC CCG
    8·1 answer
  • The diagram represents the Moon and its orbit around Earth. The arrow labeled X represents the force that keeps the Moon in its
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!