Water is an example. of a pure substance a) true b) false

The distribution of related animals and plants across the world

Which statements about a food chain are true? choose all answers that are correct. a.plants are the first living organisms in food chains on land. b. the plants in a food chain are called herbivores. c. all food chains on land begin with energy from the sun. d. carnivores in a food chain eat only plants.

Humans have to eat food to get the nutrients that keep us alive, but plants use the sun to power photosynthesis