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sertanlavr [38]
3 years ago
9

PLZ HELP ASAP!!!! I WILL GIVE BRAINLIEST!!!

Biology
2 answers:
Sonja [21]3 years ago
9 0

Answer it would be the bird

julsineya [31]3 years ago
3 0
It would be the bird . A biotic factor is a living organism that shapes its environment. In a fresh water ecosystem examples may include fish, amphibians, and algae.


Hope that helped. Happy new year! Enjoy with your family and friends.
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Which substance is considered to be a proven ergogenic aid that increases athletic performance?
fenix001 [56]

Out of the following given choices;

<span>A.      </span>Salt tablets

<span>B.      </span>Bee pollen

<span>C.      </span>Carnitine

<span>D.      </span>Coenzyme Q10

<span>E.       </span>None of the above  

The answer is D. (none of the above). These elements are found  naturally in nature and in our bodies. Coenzyme Q-10 and carnitine are found naturally in our bodies while bee pollen and salt are found naturally in our environments. Therefore, it is implausible to consider them ergogenic substances






4 0
3 years ago
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Regulatory proteins bind to _____. the operator the lactose-utilization genes the regulatory gene RNA polymerase transcription f
jarptica [38.1K]

Answer:

Regulatory gene

Explanation:

Transcription is one of the major processes that occurs during gene expression. It is the transfer of the genetic instructions in DNA to mRNA. A strand of mRNA is made using complementary base pairs.

However, there is need for gene expression to be regulated.

Gene regulation refers to the mechanism that acts to induce or repress the expression of a gene. These include structural & chemical changes to the genetic material, binding of proteins to specific DNA elements to regulate transcription. These proteins that influences transcription by binding to specific nucleotide sequences (DNA segments/gene) are referred to as REGULATORY PROTEINS and those involved in regulating transcription of genes are called TRANSCRIPTION FACTORS.

Regulatory proteins controls the rate and manner of gene expression by binding to specific genes, thus, making it easy or hard for RNA polymerase (enzyme that attaches to DNA to synthesize mRNA molecule) to bind to the promoter of that gene.

Transcription factors (regulatory proteins) that promote gene transcription are called ACTIVATORS while those that decrease are called REPRESSORS.

5 0
3 years ago
Which term describes the systems of continuous water movement on and in the earth?
weeeeeb [17]
A because water is collected in clouds from bodies of water than falls back down as rain snow or hail
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3 years ago
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Lina20 [59]

<span>Answer:  a)  a series of anatomical traits that distinguish Cro-magnon features from Neandertals.</span>

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<span>Significant differences found in the human and </span>Neanderthal includes<span>: 1) their DNA, 2) the brain of a Neanderthal had a raised larynx and was also bigger, and  3) Compared to modern humans, Neanderthals had bigger and muscular body but with shorter legs.</span>

Cro-magnon is<span> the earliest known Western European example of our species who lived  35,000 and 10,000 years ago. They are believed to be actually modern in every anatomical respect. They are much like us.</span>

<span>Neanderthal and Cro-magnon were believed to overlap in Europe for a thousand years but long-term interbreeding was not seen. </span>

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