Environmental factors do influence natural selection because they can increase or decrease the population of a species, by selecting those with only favorable traits.

7 0

2 years ago

Complete the sentence. A biological agent that cannot reproduce on its own is a/an ________.

ehidna [41]

The best and most correct answer among the choices provided by your question is the first choice or letter A. <span>A biological agent that cannot reproduce on its own is a VIRUS.

</span>A virus<span> is a small infectious agent that replicates only inside the living cells of other organisms.
</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly.

4 0

2 years ago

Read 2 more answers

List the 4 abiotic forms of nitrogen cycle and the chemical formula

weeeeeb [17]

Answer:

Four abiotic forms of nitrogen cycle and its chemical formula

Ammonium – $NH^{4+}$

Ammonia – $NH^3$

Nitrite – $NO^2$

Nitrate – $NO^3$

Explanation:

Ammonium: In the nitrogen cycle ammonium is starting point that is present in soil and are converted to various forms by different process.

Ammonia: In the process of nitrogen fixation, the bacteria having nitrogenase enzymes reacts with the nitrogen as well as hydrogen and produces the ammonia, which is further converted to organic compounds.

Nitrite: The nitrosomonas bacteria present helps in conversion of nitrogen gas into nitrite.

Nitrate: Again the Nitrite is converted into Nitrate by the nitrobacter. During the process of assimilation ammonium and nitrate are absorbed by the plants.

8 0

3 years ago