In what stage of cellular respiration is most of the carbon dioxide produced?
a. glycolysis
b. fermentation
c. citric-acid cycle
d. electron transport chain

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above