<span>The cell needs to maintain homeostasis. </span>
Answer:
all the digestive activities of life (respiration , digestion, excretion, etc) occur at the cellular level.
Explanation:
-Eijiro <3
Answer:
All adaptations help organisms survive in their ecological niches. ... Adaptation is the evolutionary process whereby an organism becomes better able to live in its habitat or habitats.
hope that helped
<span>Costly
Labor intensive
.Requires skilled person as selection is practiced
Pedigree record maintenance is time consuming
.<span>Selection for yield or other characters in F2 and F<span>3 </span>is ineffective.
</span><span>One important to note is genetic variation available for selection gets decreased in later generations due to the individual plant selection carried out earlier.
disadvantages
</span></span>
It can be: climate, nutrience