Which trophic level do you think is the most important for the ecosystem? Explain your reasoning in two to three sentences.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

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.