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3 years ago

How can pollution be found in greater amounts at higher trophic levels compared to lower trophic levels

2 answers:

7 0

Pollution can be found in greater amounts at higher trophic levels compared to lower trophic levels by Biomagnification. It indicates the presence or increase in the concentration of toxic materials or pollutants in the tissues of living organisms in a trophic level of an eco system.

suter [353]3 years ago

4 0

Answer:

Through the process of biomagnification. An example is what happens with mercury in marine species.

Explanation:

Mercury is a pollutant known as a problem for the environment and the oceans, which affects the marine fauna to varying degrees and therefore the health of human beings. Methylmercury is the most toxic form of mercury and accumulates in the tissues of organisms. It is capable of bioaccumulating up to about one million times along the marine trophic chain, from microorganisms to predatory fish and mammals. In view of the ability to accumulate in organisms through trophic levels, higher concentrations are expected to be found in predatory fish and marine mammals (higher trophic levels), through the process known as biomagnification.

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4 years ago

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3 years ago

Which of these effectors is not directly controlled by the autonomic nervous system?

prohojiy [21]

Answer:

d. Skeletal muscle

Explanation:

There are two components of efferent nervous system.

Somatic nervous system
Autonomic nervous system

SOMATIC NERVOUS SYSTEM:

Somatic nervous is one of the components of efferent/motor nervous system.

It controls voluntary activities. It involves the control of skeletal muscles.

It is composed of the motor neuron and the innervating muscle.

AUTONOMIC NERVOUS SYSTEM:

Autonomic nervous system is the other efferent/motor system of the body. It controls the involuntary activities. It involves the control of cardiac muscle, glands and smooth muscles of the body.

It is composed of 2 neurons; preganglionic and postganglionic neurons.

Autonomic nervous system is further divided into:

Sympathetic nervous system (it is responsible for flight and fight responses)
Parasympathetic Nervous system (it is responsible for rest and digestion)
Enteric division ( controls Gastrointestinal system)

QUESTION:

d. skeletal muscle

This is the correct answer choice as skeletal muscles are not controlled by autonomic nervous system. They are controlled by somatic nervous system and are under voluntary control.

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4 years ago

Which organism in the food web exists only as a predator? NEED ANSWERS ASAP!!!

Leya [2.2K]

Answer:

The top predator of a food chain is the carnivore within the community that does not have any predators of its own.

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3 years ago

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C. Reactive

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3 years ago