2. Which of the following is NOT a necessary input for the process of photosynthesis? A. CO2, (carbon dioxide)
B. Sunlight
C. H20 (water)
D. 02 (oxygen)

What are four key elements of the study of economics?

Imagine that a mouse has white fur because of a mutation in its dna. which of the following conclusions can be drawn

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.