18. The most essential feature of C4 plant is: A. They can concentrate CO2 in their cell
B. Lose less water by transpiration
C. Have high optimum temperature
D. Have higher rate of photosynthesis and growth

What part of the brain is highlighted in the diagram below?

Which enzymes break down carbohydrates?

Study the picture of the ocean. which is the best example of an organism’s niche shown in the picture? a. the environment contains several of the same species of coral. b. the shallow area of the ocean meets the needs of the coral and the fish. c. the ocean has fish and coral that live in the same area. d. the coral take in food from the water and provide shelter for the fish.