How does an autotroph get its food? a. it consumes other organisms as food. b. it absorbs food from its environment. c. it makes its own food. d. it makes its own food through cellular respiration.

The correct answer is option C, that is, it makes its own food.  

The autotrophs accumulate chemical energy in the form of carbohydrates, which they produce themselves. Food is the chemical energy accumulated in organic molecules. The majority of autotrophs convert sunlight to produce food, by the process known as photosynthesis.  

Only three species groups, that is, plants, some bacteria, and algae possess the tendency to perform the process of photosynthesis. The autotrophs are also known as producers, they start the food chains and feed all the forms of life.  

b

is correct hope this   also i learnd this in middle school

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!