<span>The earthworm's ventral vessel acts as a pump to push blood throughout the body.</span>
U have to look at the images you have to be abled to answer this question...
Answer:
The Continental Drift theory is a theory because there is no evidence to support it. Alfred Wegener developed the Continental Drift theory in the 1800's.
Channel protein is important because it is embedded in the membrane and it also covers the membrane. This is important because the channel must transport the micromolecules and ions in and out of the cell. Carrier proteins are important because the carrier must transport the molecule in and out of the cell.
Answer:
It was a non-seed-bearing plant, or sporophyte, such as a moss, liverwort, or hornwort.
Explanation:
All plants have spores as part of their life cycle (alternating between sporophyte, which is asexual, and gametophyte, which uses sexual reproduction), but because the spores of this fossilized plant were used for reproduction, this plant most likely did not produce any seeds.
