It contracts and relaxes!
Hope this helped u!!
These are called igneous rocks due to them being made from lava from an volcanoe eruption,
Answer: Options A, B, C, D at correct
Explanation:
Cnidarians are a branch of invertebrates characterised by by a radially symmetric body including a saclike internal cavity and nematocysts; stinging structures that aids in feeding. They are also known as coelentrates. They are diploblastic (2 body layer). They also reproduce asexually by various mean including budding. Example include sea anemones, hydra, corals, jellyfish etc
Sample b is the control group because it’s the group not being tested and being kept the same.
I think the answer would be A. Increased blood pressure.
