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In an energy pyramid, which level typically has the most biomass?(1 point)

Responses

Secondary consumers
Secondary consumers

Tertiary consumers
Tertiary consumers

Producers
Producers

Primary consumers
Primary consumers
Question 13
What is primary productivity?(1 point)
Responses

The decomposition rate of organic matter
The decomposition rate of organic matter

The rate at which energy is stored by plants
The rate at which energy is stored by plants

The rate at which energy is consumed by animals
The rate at which energy is consumed by animals

The total biomass of all organisms in an ecosystem
The total biomass of all organisms in an ecosystem
Question 14
Biomagnification refers to:(1 point)
Responses

The spread of toxins through air and water
The spread of toxins through air and water

The increase in toxin concentration as it moves up the food chain
The increase in toxin concentration as it moves up the food chain

The decrease in toxin concentration as it moves up the food chain
The decrease in toxin concentration as it moves up the food chain

The conversion of toxins to harmless substances
The conversion of toxins to harmless substances
Question 15
DDT is an example of a substance that biomagnifies. It was historically used as(1 point)
Responses

a fertilizer
a fertilizer

a herbicide
a herbicide

a fungicide
a fungicide

a pesticide
a pesticide
Question 16
Anaerobic respiration occurs in the absence of(1 point)
Responses

oxygen
oxygen

ATP
ATP

glucose
glucose

carbon dioxide

1 answer

Here are the answers to the questions provided:

Question 12: In an energy pyramid, which level typically has the most biomass?
Answer: Producers

Question 13: What is primary productivity?
Answer: The rate at which energy is stored by plants

Question 14: Biomagnification refers to:
Answer: The increase in toxin concentration as it moves up the food chain

Question 15: DDT is an example of a substance that biomagnifies. It was historically used as:
Answer: a pesticide

Question 16: Anaerobic respiration occurs in the absence of:
Answer: oxygen

Feel free to ask if you have any more questions!