Select all the correct answers. Which two body systems interact to expel the waste product carbon dioxide?

1) urinary system
2) nervous system
3) excretory system
4) circulatory system

20 points asap! question 1 - in your own words, explain the scientific evidence that supports the plate tectonic theory. question 2 - in your own words, explain why the geological structures in florida are different from the geological structures in colorado.

Asmall population of chimpanzees lives in a habitat thant undergoes no change for a long period of time. how will genetic drift affect this population

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.