I think the hydra lacks the specialized cells for touch and chemical detection. On the other hand earthworms have touch, light, vibration and chemical receptors along the entire body surface. Both of them are invertebrates (those animals without a backbone), they include insects, worms, jelly fish, spiders among other animals.
Answer:
Sedimentary rocks are formed from the accumulation of minerals due to erosion.
Metamorphic rocks are rocks formed under extreme heat and pressure.
Igneous rock is a type of rock formed when magma cools.
All three are rocks formed under different circumstances.
They might not have that alarm response to that chemical substance or they could be far enough from it to not be effective
Answer:
TTC UCC TUG CUT
Explanation:
A flips to T (remember apple goes with tree) howverm in an RNA sequence or complemntary DNA sequence, T become U and U becomes T.
C flips to G and G flips to C (remember car goes with garage)
I would need to see what is labeled b, in order to help you.