Help me ecology hw Be the first with correct answers?

Question

What is the original source of energy for an ecosystem? Describe how that energy is transferred to different organisms in that ecosystem.

List:

frog, human, hawk, flies, grass, snake, bacteria, mice, grasshopper, flea, rotton fruit, fish

a)name all the producers in the list

b)name all the hervivores in the list

c)name the carnivores in the list

d)name the parasite in the list

e)name the decomposer in the list

Using those words in the list how could i draw a food web using eight of the organisms

Whats the difference btw. food web and food chain

Answer 1

a - grass

b - grasshopper, flea

c - snake, mice, hawk , frog, fish

d- flies

e- bacteria