C. a toy train is the item that has characteristics similar to a scientific model.
Since all cells in our body contain DNA, there are lots of places for mutations to occur; however, some mutations cannot be passed on to offspring and do not matter for evolution. Somatic mutations<span> occur in non-reproductive cells and won't be passed onto offspring. For example, the golden color on half of this Red Delicious apple was caused by a somatic mutation. Its seeds will not carry the mutation.
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A single germ line mutation can have a range of effects:
<span><span>No change occurs in phenotype.
Some mutations don't have any noticeable effect on the phenotype of an organism. This can happen in many situations: perhaps the mutation occurs in a stretch of DNA with no function, or perhaps the mutation occurs in a protein-coding region, but ends up not affecting the amino acid sequence of the protein.</span><span>Small change occurs in phenotype.
A single mutation caused this cat's ears to curl backwards slightly.</span><span>Big change occurs in phenotype.
Some really important phenotypic changes, like DDT resistance in insects are sometimes caused by single mutations. A single mutation can also have strong negative effects for the organism. Mutations that cause the death of an organism are called lethals — and it doesn't get more negative than that.</span></span>
Answer:
D. H+
Explanation:
hydrogen protons are found in water
a process called protolysis occurs where water molecules exchange protons with each other
The correct answers is:
is formed when fuel is burned at high temperatures
<em>Nitrogen dioxide is another toxic gas that forms when fuels are burned at high temperatures.</em>
is the most abundant gas in the atmosphere
<em>The most abundant gas is nitrogen. Over 78 percent of the air we breathe is nitrogen (N)</em>
can cause acid rain
<em>Both nitrogen dioxide and sulfur dioxide can cause acid rain. The damage done by acid rain is devastating to the plants and animals in an ecosystem.</em>
is a major pollutant in the air
<em>AQI measures five major pollutants, including carbon monoxide, nitrogen dioxide (NO2), and sulfur dioxide (SO2).</em>
Wrong answers:
is a waste product of photosynthesis
<em>The waste product of photosynthesis is oxygen.</em>
