What does the presence of only two tissue layers make cnidarians?

endodermic

diploblastic

ectodermic

none of the above

Where do the essential nutrients in soil come from?

Which is an example of a covalent bond

What 4 structures do all vertebrate embryos initially have?

Describe how Seymour Benzer's phage experiments contributed to deciphering the genetic code

You run 100m in 25s. If you later run the same distance in less time, explain if your speed increases or decreases

What is the energy of a photon first used to do in photosynthesis?

Select the correct statement regarding chemical synapses. A) Cells with gap junctions use chemical synapses. B) The release of neurotransmitter molecules gives cells the property of being electrically coupled.

How can speciation of plants benefit humans

Is cellulose a fat, carbohydrate or protien

I mineral must be formed by a manufactured process to be considered a mineral. T or F