Healthcare should be the answer.
Answer:

Explanation:
Let
x ----> the surface area of a sphere
y ---> the volume of a sphere
we know that
The ratio of surface area to volume of a sphere is equal to divide the surface area by the volume of the sphere

we have

substitute the values

Answer:
Fish, fish has a lot of protein which can be broken down to amino acids
Explanation:
hope that helps
After a molecule of DNA replicates, two double-stranded molecules are formed. This results in a total of four strands of DNA.
The nutrients get to the cells in a flatworms solid acoelomate body by diffusion process. Flatworms feed primarily on protozoa and bacteria, smaller worms and tiny organisms, dead or alive, that they come across. Based on the species of the flatworms , they also consume plant materials. They rely on diffusion to transport oxygen and nutrients to their internal tissues.