B. New substances are formed. In a chemical reaction, the starting molecule must be changed or turn into another. For example: rusts that form in a tin can is a chemical reaction. The iron in the can combines with the oxygen in the atmosphere, creating rust (iron oxide), which is a different substance.
Answer: 1.A food web is multiple food chains and an energy pyramid shows how energy moves through trophic levels.
Explanation:
Answer:
The first two answer choices
Explanation:
Hibernating and migrating both use energy, while drinking water and photosynthesizing to generate glucose for a plant is a way that an organism can obtain energy. Hope this helps!
A person who specializes in the study of animals is called a zoologist. Zoologists who study certain kinds of animals have their own names.
