question:
Scientists conduct investigations to answer questions. Before making a valid conclusion, scientists must

answer:
collect relevant evidence

question:
Which are produced during photosynthesis?

answer:
oxygen and sugar

question:
Solar radiation is a combination of light with different wavelengths. Which type of ray can harm human skin the most?

answer:
ultraviolet

question:
The population of which of the following 26 organisms would most likely decline if small animals like rats, rabbits, and snakes were eliminated from an ecosystem?

answer:

hawks