During the Calvin cycle of photosynthesis, a plant cell uses carbon dioxide to synthesize large carbohydrates.

Which statement about this reaction is true?

A. energy is consumed.
B. It is a catabolic pathway of metabolism.
C. ATP is produced.
D. It is an exergonic reaction.

Which organ controls breathing? lungs alveoli heart diaphragm

Which is an example of a vestigial structure? a: paw of a lionb: wing of a birdc: appendix of a humand: tail of a cat(i think it's a but i'm not sure)

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.