What are two different forms of a single gene called? A. factors

B. alleles

C. traits

D. chromosomes

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

The reactions of photosynthesis occur in the of plant cell? a. mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Agust of wind blowing east pushes against a ball. when will the wind do work on the ball? when the ball moves to the east when the ball moves to the north when the ball stays in one place when the ball moves north or south