Question

why can't animals make food from carbon dioxide water and sunlight like plants do

Answer 1

Animal cells don't have chloroplasts. That makes sense, of course, because animals need to eat to live! Animals can't make their own food, so they eat to survive. However, plants can use their chloroplasts to make their own food!

Answer 2

Photosynthesis is the process by which plants make food by using sunlight, water and CHLOROPHYLL.Chlorophyll is green pigment present in an orgnalle called chloroplast. These are present in plants.

Animals cells don't have these (chloroplasts) and thus they can't prepare their own food. They depend on other animals or plants for food and known as Heterotrophs.

:)