Homework 19-1-2010

1. Cactus Fruit, Flowering Plants

2. Rattlesnake (show in image as secondary, sorry) Small Mammals, Insects

3. Lizards, Scorpions

4. If a farmer shoots all the rattle snakes in the area, it would effect the food chain much, much more than if he killed all the insects as all 3 of the top predators rely on it as well as lizards as food.

5. If a plant makes seeds that stick to a coyotes fur, and the coyote carries it, the relationship is commensalism as the plant benefits from its population being spread, while the coyote is unaffected.

Homework 18/1/2010

1. a. Squirrels and other small rodents, insects, pronghorns and other grazers.
b. Raptors and Badgers.
c. Lizards, small reptiles and bats.
d. (none)

2. Coyotes are on the top of the food chain, shooting them would result in the lizard population becoming much higher. Thus making the insect population much lower, and cutting down the bat's food. At the same time making the raptor population much higher due to the lizards, and would make populations of all the animals the raptor eat lower and making the animals eat by those higher, and this process would only stop all the way at the bottom of the food chain, with the plants.

3. If mountain lion populations increased, pronghorn populations would start to lessen, making coyote populations lower, and effecting all the other animals it ate, and would effect everything down to the producers.

4. A new or more producer(s) would making primary consumer populations higher and making all the consumer stages above them higher.