1) Which feature in cnidarians is the strongest indicator that they are more complex than sponges? They have the ability to reproduce sexually.
They have the ability to attach to surfaces.
They have a medusa body form.
They have nerve cells.

The answer is "They have nerve cells". Edge. 2021

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

As molecules are formed from metabolism, entropy __ and the universe becomes less disordered. a. is decreased b. is increased c. moves closer to equilibrium d. is unchanged