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Lelu [443]
3 years ago
5

Hai has been taking expensive beta-carotene supplements for years, because he believes they will reduce his risk of cancer. hai

has just learned that a well-controlled study published in the prestigious new england journal of medicine showed that beta-carotene supplements do not reduce cancer risk. hai is probably experiencing
Biology
1 answer:
Salsk061 [2.6K]3 years ago
3 0

an emotional dilemma or cognitive dissonance

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One technique used to check ecosystem health and biodiversity of an ecosystem is to monitor populations of native species and in
vodomira [7]

Threats to Native Wildlife. Invasive species cause harm to wildlife in many ways. When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. ... Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.

8 0
3 years ago
How is natural selection similar to selective breeding? How is natural selection different from selective breeding?
shusha [124]

Answer:

Natural selection and selective breeding can both cause changes in animals and plants.the difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. for this reason selective breeding is sometimes called artificial selection.

Explanation:

Hope this helped Mark BRAINLEST!!!

6 0
3 years ago
Which gas is most abundant in Earth's atmosphere?
Alisiya [41]

Answer;

Nitro.

Explanation:

By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%. Although humid air seems like it contains a lot of water, the maximum amount of water vapor that air can hold is only about 4%.

4 0
3 years ago
Read 2 more answers
2 Points
SVEN [57.7K]

Answer:

B, A fossil found in rocks from one time period

Explanation:

Fossils are used to determine the ages of rock layers. Index fossils are the most useful for this. Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in. Hope that this helps you :)

3 0
2 years ago
what inputs do plants need to carry out photosynthesis and how might you provide these on another planet
Fittoniya [83]
The inputs all plants need to carry out photosynthesis are water(H2O) + carbon dioxide (CO2) + sunlight
7 0
3 years ago
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