Answer:
A simple microscope
Explanation:
Because it only has a single lens
When there is not enough oxygen for cells to use cellular respiration<span />
Answer:
Any plant. Plants are producers and convert sunlight into chemical energy or sugar. This conversion is called photosynthesis.
The answer is any plant. So for example, grass.
<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.
