The food web above shows how energy moves through a lake environment. If a chemical company were to put a harmful chemical that kills off all of the phytoplankton, which animal would be immediately affected?

A)bacteria

B)invertebrates

C)human

D)prey fish

Which type of fossil does this image depict?

Which of the following is the correct formula for copper (i) sulfate trihydrate? cuso4 · 3h2o cuso4(h2o)3 cu2so4(h2o)3 cu2so4 · 3h2o

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)