Geology, Oceanography, Meteorology, Astronomy, are the four main branches. these are the studies of the
<span>earth's atmosphere and the processes that produce weather and climate conditions
</span>
Answer:
A. differentiation
Explanation:
Cell differentiation consists of a set of processes that transform and specialize embryonic cells. After these transformations, their morphology and physiology are defined, which make them capable of performing a certain function.
We call differentiation in biology the process that all living cells go through to specialize in a particular function. These cells, despite being differentiated, continue with the same genetic code as the first cell, and the difference between them is in inhibiting or activating certain groups of genes - these responsible for defining the function of each of them. This, in addition to determining its function, entails some changes in cell structure, as happened with the cell described in the question, which promoted a change in its structure by merging with neighboring cells to form a multinuclear tube.
Answer: Possession of traits that aid their survival in extreme conditions.
Explanation: Because archaea that grow in extreme environments possess certain characteristics that aid in their survival in the extreme weather conditions. Those traits are studied regularly to improve other plants.
The correct answer is (b) <span>They can be directly observed.</span>
