Question

Question 52 pts
(03.01 MC)

Which statement best describes an ecological effect of estuaries?

Group of answer choices

They deplete surface and groundwater resources.

They destroy natural flood preventions and erosion control.

They provide fresh drinking water if an aquifer is polluted.

They provide habitats for many different organisms.

Flag question: Question 6
Question 62 pts
(01.01 LC)

Which of the following represents an abiotic factor?

Group of answer choices

Plants

Sunlight

Insects

Mammals
Question 91 pts
(01.02 MC)

How can nitrogen from the air enter the soil?

Group of answer choices

Lightning and rainfall

Sunlight

Photosynthesis

Respiration

Flag question: Question 10
Question 102 pts
(01.02 MC)

Trey wrote a few steps to describe how carbon circulates between the atmosphere and living organisms:

Step 1. Carbon enters the atmosphere when fossil fuels are burned.
Step 2. Plants absorb carbon in the air through photosynthesis.
Step 3. Plant-eating animals consume the carbon stored in plants.

If step 2 is removed, which statement best describes the effects of this missing step on the carbon cycle?

Group of answer choices

More carbon is stored in the atmosphere.

There is a decrease in the amount of carbon stored in the air.

Animals consume foods with extra stored carbon.

More carbon is stored in plants instead of the air.
Question 122 pts
(01.04 LC)

Which limiting factor of population size is biotic?

Group of answer choices

Sunlight

Land

Food

Water

Flag question: Question 13
Question 132 pts
(01.04 LC)

Ecologists conduct population studies to understand population dynamics by investigating how the ________ increases or decreases over time.

Group of answer choices

amount of resources

number of individuals

size of the habitat

diversity of species
Question 152 pts
(01.05 LC)

Two lizards with slightly different coloring exist within the same ecosystem. They look almost alike. Which of the following would best determine if they are different species?

Group of answer choices

They exist within the same ecosystem.

They have different characteristics.

They behave differently.

They cannot reproduce with one another.
Question 172 pts
(01.06 MC)

Invasive species usually

Group of answer choices

are the first to die in response to a pollutant

dominate resources and harm native species

become indicator species of the food web

are the least abundant species in the food web

Flag question: Question 18
Question 181 pts
(01.06 MC)

Keystone species are often the

Group of answer choices

species that fill an important niche for the community

producers of the community

apex predators of the food web

most abundant species in the food web

Flag question: Question 19
Question 191 pts
(02.01 MC)

A biome that is moderately rainy and cold is most likely a

Group of answer choices

deciduous forest

tropical grassland

chaparral

tundra

Flag question: Question 20
Question 201 pts
(02.01 MC)

Which of the following would most likely be the characteristics of a grassland?

Group of answer choices

Freezing temperatures and location in higher latitudes

Cold temperatures and location around the equator

Moderate temperatures and location in mid to high latitudes

High temperatures and location in high latitudes

Flag question: Question 21
Question 211 pts
(02.03 MC)

Which of the following represents a tragedy of the commons?

Group of answer choices

Leaves piled in a person's backyard

Plastic trash in the neighborhood park

Plenty of food at a local market

Two hospitals for the town's residents

Answer 1

Question 5: They provide habitats for many different organisms.

Question 6: Sunlight.

Question 9: Lightning and rainfall.

Question 10: More carbon is stored in the atmosphere.

Question 12: Food.

Question 13: Number of individuals.

Question 15: They cannot reproduce with one another.

Question 17: Dominate resources and harm native species.

Question 18: Species that fill an important niche for the community.

Question 19: Deciduous forest.

Question 20: Moderate temperatures and location in mid to high latitudes.

Question 21: Plastic trash in the neighborhood park.