Answer:
More exposure causes mutation in bacteria.
Explanation:
More exposure to the antibiotic by non-resistant bacteria causes change in its structure against the environment and as a result of that change the bacteria get resistance against that antibiotic. No, farmers should not be allowed to put low doses of antibiotics in animal feed because it has no effect on the antibiotic-resistant bacteria. The farmer should use another antibiotic on the antibiotic-resistant bacteria which they have no resistance.
Answer:
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Explanation:
Scientists say early plants may have contributed. Plants enhance a process called silicate weathering, which sucks carbon out of the atmosphere and ultimately tucks it away at the bottom of the oceans. Here's how it works: Caron dioxide in the atmosphere forms carbonic acid.
The two main properties of sound are frequency and amplitude. The frequency of the sound waves determines the pitch of the sound. The amplitude of sound determines the loudness. The quality of sound is affected by the pitch and the loudness.
The answer would be B. The available energy would decrease from the mouse to the hawk. As the trophic level goes up the energy decreases because some of the energy is lost in the form of heat for every energy transfer. This energy being lost cannot be used by the organisms on the next level.
Answer:
Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem.
Explanation:
