We run, play, work, study. we need energy to do all of this. in fact, one characteristic of living things is that they need and use energy. two processes are needed in us humans to break down food to release the energy that is stored in our food. they are and cellular respiration. a: circulation b: digestion c excretion d: photosynthesis

The correct answer is B

EXPLANATION

Digestion is the process whereby complex food substances taken into the body is broken down into simple, soluble and absorbable form so that the body can use.

As the digested food is absorbed into the blood stream, the cells break down this digested food with or without the use of oxygen to release energy. This process is termed as internal respiration.

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

this could be newton#'s law of cooling. the cooling curve is exponential