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lana [24]
3 years ago
9

***HELP*** What is the role of a keystone species?

Biology
1 answer:
kumpel [21]3 years ago
5 0

Answer:

<h2>D. Competitively dominant to other organisms in the ecosystem</h2>

A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.

<em>Hope that helps! :)</em>

<em></em>

<em>-Aphrodite</em>

Explanation:

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The exhaustion stage of stress comes from the ___________ cycle.
devlian [24]

Answer: alarm and resistance

The exhaustion stage of stress originates from <span>the first two stages of the cycle of stress,  the alarm resistance. tress,  </span>and<span>Once alarm ( where the body system is flooded with adrenaline)  is ended, resistance sets in and finally, exhaustion takes over when the body runs out of energy.</span>

3 0
3 years ago
. You have constructed four different libraries: a genomic library made fromDNA isolated from human brain tissue, a genomic libr
aksik [14]

Answer:

A) Brain genomic library and muscle genomic library.

B) Brain genomic library and muscle genomic library - overlap completely.

Human brain cDNA library, and a human muscle cDNA library and other library is partially overlap.

Explanation:

A) The genomic library contains the whole genome content of the organism whereas cDNA library contains the coding genome of the organisms. Brain genomic library and muscle genomic library will constitute the all the genomic sequences of brain and muscle.  The cDNA library is prepared from the mRNA and the coding regions are present in this library.

B) The overlapping in the genome library might occur due to the common sequences present in the genome. Brain genomic library and muscle genomic library might completely overlap with each other as they have more sequence common among each other. All the other library may be partially overlap with each other as they have some common DNA sequences and neither library can have unique sequences.

7 0
3 years ago
A nursing team is short-staffed and extremely busy. an rn asks a nursing assistant to give a patient his afternoon medication. w
Irina18 [472]
A CNA, certified nursing assistant, can administer medication to patients. BUT this duty is subject to the level of experience and training of the CNA as well as the regulation of the state.

CNAs basically assist in the day-to-day care of patients like:
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4 0
3 years ago
Exoplanets are planets that _____.
lesantik [10]

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Explanation: Exoplanets are also known as extra solar planets which means that these planets revolve or orbit around the stars other than the sun.

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Examples of exoplanets are Kepler-186f , 55 Cancri e.

6 0
3 years ago
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What percentage of energy is wasted in the US?<br> 25%<br> 60%<br> 10%<br> 84%
allsm [11]
It is 61 percent........so estimating it as 60 %

CHEERS MATE!!
6 0
3 years ago
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