Angiosperms are flowering plants, so I'd say flowers and the parts of flowers are a pretty common characteristic.
Answer:
C] 10,000 years
Explanation:
It usually takes a million or more years. The longer, the more identifiable.
Answer AND Explanation:
As the population increases, the amount of resources are depleted. Inadequate resources makes the population growth to stop. With a high population, death rate increases due to starvation and diseases which spread more easily in a large population. There may be a decrease in birth rate due to fewer matings and abortions resulting from social stress.
Because 40= 20x2, in order to keep the ratio consistent Megan would need 1/2 of 71 g of chlorine which is 35.5, right?