In order to contain groundwater, a layer of subsoil must have porosity. that is, it must have empty spaces, or pores. in order to allow groundwater to easily pass through the subsoil, a. the subsoil's pores must be large. b. the subsoil's pores must be connected to each other. c. the subsoil's pores must be small. d. the subsoil's pores must be isolated from each other.

the answer is B the pores must be connected to each other

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.