Answer:
Because pioneer species are the first to return after a disturbance, they are the first stage of succession, and their presence increases the diversity in a region.
Explanation:
Note: They are usually a hardy plant, algae or moss that can withstand a hostile environment
Answer:
1.5 million years ago
Explanation:
Fire was first controlled by humans anywhere from about 230,000 years ago to 1.4 or 1.5 million years ago, depending on which evidence you accept as definitive. Evidence for the use of fire by Homo Erectus beginning some 400,000 years ago has wide scholarly support.
I believe the answer you are looking for is median.
example:
2 4 6 |8| 10 12 14
median: 8
three on each side of "8"
Brian : Information being sent throughout the body.
Spinal cord: Sends sensory messages.
PNS: connects to the central nervous system
A. Consumers depend on producers for food.
