Question

1. what nonliving things might you find in an ecosystem?

a. mammals, insects, and birds
b. plants, fungi, and lichen
c. rocks, air, light, and soil
d. bacteria and other microbes

1. how are populations different from communities?

a. populations consist of one species; communities consist of many species.
b. populations can contain plants and fungi; communities consist of animals only.
c. populations consist of many species; communities consist of one species.
d. populations consist of animals only; communities can contain plants and fungi.

1. what is a moose’s habitat?

a. the forests of north america
b. the number of moose in a given area
c. the plants and fungi that moose eat
d. its antlers

1. which of the following is an example of an animal adapting to its environment?

a. a bald eagle that cannot see well
b. a fish that eats fish food
c. a deer that drinks water
d. a desert owl hunting at night to avoid heat

1. what can you infer about the kangaroo rat from the fact that it thrives in the desert?

a. it must be very large.
b. it must eat cacti.
c. it must live in a very small community.
d. it must be able to survive on very little water.

1. lakes and oceans are examples of aquatic ecosystems. what does “aquatic” mean?

a. saltwater
b. water - based
c. freshwater
d. filled with fish

1. which of the following is an example of a living thing interacting with a nonliving thing?

a. a flower that’s pollinated by a bee
b. a plant and a fungus growing together as lichen
c. a prairie dog that lives beneath the soil
d. a beaver that cuts down trees with its teeth

1. which of the following words best describes the desert ecosystem?

a. moist
b. arid
c. frigid
d. temperate

1. image of a scorpion why can’t you find scorpions in the arctic? choose the best answer.

a. because they can’t walk on ice.
b. because they only like to catch warm - blooded prey.
c. because their stingers don’t work at cold temperatures.
d. because their bodies are not adapted to life in the arctic.

1. what can you conclude about polar bears from the fact that they live in the arctic?

a. they would not be able to thrive in the desert
b. they are not biologically related to other bear species
c. they eat mostly scorpions and kangaroo rats
d. they must be able to survive with very little water

Explanation:

Question 1

Nonliving things in an ecosystem are abiotic factors. Option a has living organisms (mammals, insects, birds), option b has living (plants, fungi, lichen), option d has living (bacteria, microbes). Option c (rocks, air, light, soil) are nonliving.

A population is a group of the same species in an area. A community is multiple species (populations) interacting. Option a states this correctly. Option b is wrong (communities have all organisms), c swaps population and community definitions, d is wrong (populations can have any species, communities too).

A habitat is the natural environment an organism lives in. Option a (forests of North America) is moose's habitat. Option b is population size, c is food (niche related), d is a body part.

Answer:

c. Rocks, air, light, and soil

Question 2