<h2>Answer:</h2>
The two reasons are given below:
- Natural selection.
- Lack of food
<h3>Explanation:</h3>
Natural selection is the phenomenon of the evolution in which the organisms able to fit in the changing environment survive while other organism died. Hence the survival if the fittest and then these organisms. Further reproduce to give birth organisms more fit to the changing environment.
The long neck giraffe survive but short neck died. So the population of long neck increased while short neck go extinct.
Other reason is the change of food resource. The food resource change from grass to long trees.
The two organelles found only in plant cells are chloroplasts and vacuoles.
Biodiversity is intimately linked to the production of ecosystem services. ... Invest models habitat quality<span> and rarity as proxies for biodiversity, ultimately estimating the extent of </span>habitat<span> and vegetation types across a landscape, and their state of degradation.</span>
A serum calcium concentration of this range only means
that the cancer must be suspected to be a malignant one. So the nurse should
suspect that the malignancy of the cancer is what is causing the electrolyte imbalance
of the patient.
Answer:
b. All three plants have a common ancestor that had leaves.
Explanation:
