Question

4.
a fungi breaking down a dead tree in the forest is an example of which of the following?
a producer
a consumer
a competitor
a decomposer
5.
bacteria in your intestines are an example of mutualism if they
make you sick.
help you break down food.
have no effect on you.
are destroyed by digestive juices.
6.
what is the best explanation for the main cause of earthquakes?
heating and cooling of the earths crust
blocks of the earths crust sliding past and slipping along each other
seismic waves sink the earths crust lower into the mantle
layers of the asthenosphere pushing into the earths crust from below

Explanation:

Question 4:

Decomposers break down dead organic matter, like fungi breaking down a dead tree. Producers make their own food, consumers eat living organisms, and competitors fight for resources, which do not match this role.

Question 5:

Mutualism is a symbiotic relationship where both organisms benefit. Intestinal bacteria helping break down food benefits the human (gets nutrients) and the bacteria (gets a habitat/food source). Making you sick is parasitism, no effect is commensalism, and being destroyed is not a mutual benefit.

Question 6:

Earthquakes primarily occur when tectonic plates (blocks of Earth's crust) slide past, slip, or collide with each other, releasing built-up pressure. Heating/cooling of the crust, seismic waves sinking crust, or asthenosphere pushing are not the main cause.

Answer:

1. D. A decomposer
2. B. help you break down food.
3. B. Blocks of the Earth's crust sliding past and slipping along each other