1. A mangrove community in a coastal area contains mangrove trees, mangrove water snakes, sheepshead, and Roseate spoonbills. Differentiate between this biological community, its populations, and its ecosystem. (1 point)
Think about the relationships between populations, communities, and ecosystems.

2. A red-tailed hawk catches and eats a deer mouse on the prairie. The deer mouse has been eating seeds from a purple coneflower. Draw a food chain with arrows to show these interactions. Label the producer, herbivore, and carnivore in the food chain. (1 point)
Think about how energy moves in a food chain.

3. A boreal forest in the northern United States surrounds a large lake.

a. What are some characteristics of the boreal forest, and what animals might live there? (1 point)

b. What are some characteristics of the lake, and what animals might live there? (1 point)

4. Domestic cattle often have interactions with wild animals. In South America, vampire bats drink the blood of sleeping cattle. Disease may spread through these bites. However, loss of blood does not cause great harm to the cattle. In North America, wolves sometimes attack and eat young cattle.

A. What are the names of these two interactions with cattle, and how do they differ from each other? (1 point)
In which situation are cattle hosts?

B. What would the interaction between the cattle and the vampire bats be called if the bats drank blood but somehow caused no harm at all to the cattle? Explain your answer. (1 point)
In which symbiotic relationship is one member unaffected?