The diaphragm is the large flat muscle. hope that helps :)
Answer:
B. In an area where a glacier has retreated
Explanation:
Primary succession, starts at a lifeless area where it has been affected by lava flood and/or retreated glacier therefore the answer is B.
The clivage furrow forms, the chromosomes are on either side of the cell
Venus is the answer. That planet has a dense atmosphere of CO2, which has produced a runaway greenhouse effect.
The answer is tunicates. Tunicates are commonly known as sea squirts and are in the Chordata phylum, even though they don't have a back bone. Which is really weird. But they just got put into the same category as humans. This is because they have a notocord and a back bone when they are larvae. But they lose all these when they become adults.
