Answer:
a. Centromere
A centromere is a specialised DNA sequence of a chromosome that links pair of sister chromarids (a dyad)
Answer:
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play.
Explanation:
Most of legumes have symbiotic, nitrogen-fixing<span> bacteria, that live in structures called "</span>root nodules"<span>. </span>
<span>Answer: a. take place in nuclear reactors
</span><span>Controlled nuclear chain reactions are the reaction in nuclear reactors. The reaction is controlled to make its rate slower. This will make the reaction relatively safer, so the energy produced can be changed into electricity in power plant. When the reaction is not controlled, it could cause explosive like in nuclear bomb.</span>
Methane the most, small amount of oxygen and other gases
