Non-disjunction occurs when a the chromosomes do not split properly during meiosis resulting in too few chromosomes I believe.
Answer:
no
Explanation:
something has to be living in order to grow
The answer is C. nitrogen.
Plants are main producers in ecosystems so, primary productivity of ecosystems depends on them. Carbon is necessary for plants, but it is widely present in plants. On the other hand, calcium and sodium are not as essential. However, nitrogen is important for plants because it is necessary to make proteins. Proteins take part in many different processes such as photosynthesis (this is actually primary productivity). But, nitrogen is not available to plants, they cannot absorb it simply from the air but rely on some symbiotic bacteria which are able to.
Answer:
in the nucleus of eukaryotic organisms
Vestigial organs or parts of the body
are those that has lost its function in the course of evolution. These organs
or parts have degenerated or atrophied. It can appear as remaining small or
imperfectly developed. An example is the tiny eyes on an insect living in a
lightless cave.
