I need help, this isn’t from a tutor lol:Question 1Which of these

I need help, this isn’t from a tutor lol:

Question 1

Which of these

trophic levels contains photosynthetic organisms?

A) First trophic level

B) Second trophic level

C) Third trophic level

D) Fourth trophic level

E) Fifth trophic level

Question 2

Which trophic level is most likely to have the smallest population of organisms within an ecosystem?

A) First trophic level

B) Second trophic level

C) Third trophic level

D) Fourth trophic level

E) Fifth trophic level

Question 3

Which of the following are examples of ecosystem services that humans do derive from bodies of water?

1.   The development of algal blooms in lakes

2.   The gradual removal of water pollutants by wetlands

3.   The growth of fish, crustaceans, & other food sources in oceans

A) 1 only

B) 1 and 2 only

C) 1 and 3 only

D) 2 and 3 only

E) 1, 2, and 3

Question 4

Which phenomenon is most likely to result in secondary succession?

A) Hunters kill large numbers of deer to thin a rapidly growing population.

B) Lions follow migrating antelope to a new section of savannah.

C) Loggers clear-cut a forest and leave when no more trees remain.

D) A volcanic eruption covers a mountainside in lava and ash.

E) A parasite kills a bush in a grassland ecosystem.

Question 5

Which of the following actions is least likely to be taken to protect a species listed as endangered under the Endangered Species Act?

1.   Restoring the natural habitat of the species

2.   Preserving the species’ genetic material in embryo or seed banks

3.   Introducing the species to regions in which it has not historically lived

A) 1 only

B) 2 only

C) 3 only

D) 1 and 2 only

E) 2 and 3 only

Question 6

The predator-prey graph shown tracks the wolf and moose populations in a certain ecosystem over the past 100 years. What is most likely the carrying capacity for moose in this here ecosystem?

A) 800

B) 1,200

C) 1,000

D) 1,400

E) 1,600

Question 7

In which of the following ways do organisms play a role in the water cycle?

1.   Water stored in organisms returns to the atmosphere through evapotranspiration.

2.   Plants take up water vapor through their roots through the process of sublimation.

3.   Humans deplete freshwater reserves at both the surface and groundwater levels.

A) 1 only

B) 2 only

C) 1 and 2 only

D) 1 and 3 only

E) 2 and 3 only

Question 8

A local government plans to build new roads which are going to divide one forest into several fragments. The roads can follow several different designs, each of which is gonna result in fragments of different sizes. Which design is probably gonna produce the most pronounced edge effects on the organisms that are living in the forest?

A) Three rectangular fragments, each of which is 5 miles wide and 8 miles long

B) Four rectangular fragments, each of which is 3 miles wide and 10 miles long

C) Three rectangular fragments, each of which is 2 miles wide and 20 miles long

D) Three rectangular fragments, each of which is 4 miles wide and 10 miles long

E) Four rectangular fragments, each of which is 5 miles wide and 6 miles long

Question 9

At which of the following trophic levels would you expect to find *only* 10% of the energy that was initially stored in the food chain?

A) First trophic level

B) Second trophic level

C) Third trophic level

D) Fourth trophic level

E) Fifth trophic level

Question 10

Which of the following is an example of a decomposer food chain?

A) dead mouse > fly > bacterium

B) grass > grasshopper > rat

C) algae > mosquito larva > large-mouthed bass

D) phytoplankton > zooplankton > whale

E) thistle > goldfinch > hawk

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