(7) the carbon-oxygen cycle illustrates how
a) herbivores give off oxygen
b) producers give off oxygen
c) all organisms give off carbon dioxide
d) both b and c

(8) when animals excrete urea, which type of organism is responsible for converting this waste into a form that is usable by plants?
a) decomposers
b) lichens
c) climax community
d) saprophytes

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

What is the next step in muscle contraction after the actin changes shape

What surprised you about the position of the letter e when you looked at it under the microscope? practice what did the microscope do to the letter e? remember that the letter e was in readable position when place on the microscope stage.