What is at least one reason why science cannot help to answer ethical or moral social issues?

Biology

1 answer:

Varvara68 [4.7K]3 years ago

7 0

Because what we do comes down to our own conscious and moral values. Also everyone responds to situations differently

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PLS HELP What are three types of natural selection that act on variation?

zhuklara [117]

Stabilizing selection, directional selection and disruptive selection are the three types of natural selection.

What are these types of selection?

Natural selection is the process wherein organisms get better adapted to their environments and tend to survive and produce more offsprings. It is basically a mechanism of evolution which favors those organisms that can better adapt to their environment.

Directional selection: this theory states that an extreme phenotype (a characteristic or trait) is favored over other phenotypes and this causes the allele frequency to shift in favor of the extreme phenotype over time. A particular trait, if favorable, will be expressed in the population at the most beneficial frequency.

Stabilizing selection: in this type, meaning a non-extreme trait is favored instead of one of the two extreme traits. Stabilizing selection is said to be the most common mechanism for natural selection, because most traits do not change drastically over time.

Disruptive selection: This selection is bimodal. It favors both of the extreme traits in a population.

So therefore, stabilizing selection, directional selection and disruptive selection are the three types of natural selection.

Learn more about natural selection here: brainly.com/question/23929271

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3 0

1 year ago

Worth 50 points

Nutka1998 [239]

Given that organisms accumulate contaminants into their bioavailable fractions, we can conclude that the most likely outcome of this pollutant on the oysters is that heavy metals will bioaccumulate in the oysters.

Heavy metals that are often found in water include:

Lead
Copper
Arsenic
Cadmium
Manganese

and more.

Though some metals are water-soluble, this does little to lessen the negative impact of their presence in the water. Water is used as an essential resource for all life. Metals in high concentrations, even those soluble in water, have been shown to be fatal to many organisms, including oysters.

Though oysters would suffer to a degree from biomagnification, which is the accumulation of toxins in an organism through the food chain, this will most likely become a serious problem higher up on the food chain, as the oysters are consumed by predators.

The most likely outcome of these pollutants in the water is that the Heavy metals will bioaccumulate in the oysters. This is due to the fact that the oysters will absorb the metals from the water. At high enough concentrations, this will lead to a decrease in the number of oyster offspring, possibly even reducing it to half.

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