Explanation:
the name porifera means pore bearer in latin. a sponges body is covered by a skin, one cell thick. this skin has lots of small pores ad a few large openings. the small openings are the entrances to a complex system of channels. these collar cells pump water through the entire sponge and filter out food for the sponge cell to eat
"<span>The bacteria can cut the viral DNA at its specific restriction site but protect their own chromosomal DNA by modifying its bases and blocking the restriction enzyme" is the one explanation to the statement given in question. The correct option among all the options that are given in the question is the second option.</span>
Answer:
Hotspots from under the ground
Explanation:
There are three different situations where an volcano can form. A divergent boundary, where two tectonic plates move away from each other, subduction boundary, where one of the tectonic plates moves under the other, and a hotspot. Scientists are not completely sure how hotspots form.
DescriptionNitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The transformation of ammonia to nitrite is usually the rate limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil.