Which organism has a central brain
a. sponge
b. hydra
c. flatworm
d. fish?

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

Which of the following situations describes a adaptation for a mole? question 2 options: a mole is blind and cannot see underground. a mole is bright and attracts the attention of predator birds. a mole has a sensitive sense of smell to it find food underground.

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs