Biology, 24.08.2019 22:20 hector87

Which of the following statements about change in ecosystems is true?
a. ecosystems experience change through human activity only.
b. ecosystems experience change through natural events only.
c. ecosystems experience no change.
d. ecosystems experience change through human activity and natural events.

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The answer is d. Ecosystems experience change through human activity and natural events.
The changes in our ecosystem is not because of human activity but also because of the natural events that happen today. Human activity and natural event can damage our ecosystem.

Answer from: Tcrismon1000

The correct answer would be d. Ecosystems experience change through human activity and natural events.

Ecosystem refers to a community consisted of all the living organisms (biotic component), their surroundings (abiotic component), and their interaction with each other as well as with abiotic component in a given area.

The biotic and abiotic components of an ecosystem are mainly connected through energy flows and nutrient cycles.

Both components can affect the ecosystem in positive as well as negative manner.

Thus, both human activities (such as deforestation, pollution, sustainable development), as well as natural events (such as earthquake, tsunami, forest fires), can affect the ecosystem.

Answer from: Quest

type 2 happens when excess consumption of high-sugar foods flood the blood supply with glucose and reduce the production and effectiveness of insulin. if a person has prediabetes, they can reduce the risk of full diabetes through regular exercise and a balanced, low-sugar diet.

Answer from: Quest

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

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Which of the following statements about change in ecosystems is true?
a. ecosystems experienc...

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