Answer:
1
Explanation:
Lichen are usually the first thing to grow on bare rock, making them a pioneer species. Fun fact, you can use lichen to determine if the air quality in an ecosystem is polluted.
Hope this helped :)
<span>A sperm cell has half of the chromosomes than other animal cells I think</span>
They are undergoing mitosis 2^7=128 but they started with 4 cells not two cells so it’s 2^6 which means 6 generations... tell me if turns out to be right
Definition-change in a population or species over time.
