Which is an example of how ecosystems on earth affect each other?

a. worms reproduce in soil in grassland ecosystems
b. deforestation of rain forests harms other ecosystems
c. lions get energy from the primary consumers they hunt
d. saguaro cacti can live in deserts, but not in grasslands

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? 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.

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?

What is the major difference between a virus and a viroid?