When you touch a hot pan your hand will pull away without you thinking about it.
Explain how the nervous system sends the signal and causes the effect of pulling your hand away, including the different neurons the signal is passed between, without conscious control. (6 marks)

Which of the following is a difference between a food chain and a food web? selected: a. food webs contain both plants and animals. food chains only contain animals.this answer is incorrect. b. food webs show energy transfer. food chains show which animal eats which animal. c. food webs separate organisms by tropic level. food chains do not. d. food webs are a complex patterns of energy flow. food chains only show one line of energy flow.

Compare the shapes of the bones of the human skull with the shapes of the bones of the human leg. how do the shapes differ? why are the shapes important?

Which describes the changes in the earths motion?