The energy input into an ecosystem can come from

a. sunlight

b. chemical compounds

C. soil

d. A and B

Plants use nitrogen in fertilizers for growth. However, much of the nitrogen goes unused. What is one direct outcome of this excess nitrogen?

6. What quantity can you calculate if you know that a car travels 30 kilometers in 20 minutes?

Why is DNA replication such an important process?

The structure that is associated with movement, orientation, recognition, perception of stimuli and is the portion of the brain labeled e. it is called the

The theory that explains how organisms change over time genetic changes are inherited from one generation to the next allow the future of offspring to fit into their environment survive more successfully. A. Theory of Vestigial Structures. B.

What role did social media play in the outbreak? Contagion movie

Identify which statement is NOT correct about the eyes of mammals. A) Mammals have two eyelids, one upper and one lower eyelid. B) Mammal eyes have a lens which serves to focus the light.

What's the relationship between humans and climate?

Linnaeus's significant development to modern taxonomy is

What does the term natural selection mean