Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA<span>). Passed from parents to offspring, </span>DNA<span> contains the specific instructions that make each type of living creature unique.</span>
"The number of growth rings" is by far the best indicator of the age of a woody plant, although it should be noted that there are other ways of indicating age.
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From the Question A is the ANSWER
A. Because apples mature more quickly than hawthorn fruit, the apple-feeding flies have been selected for more rapid development
This Will result to temporary isolation between the hawthorn and Apple maggot flies
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[The recent activities of fossil fuel combustion has had adverse effects on the ozone layer]- B.
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Explanation:
They may have som bad side effects such as nausea, indigestion, vomiting etc. Also the bacteria change or adapt if not taken correctly so they are no longer affected by the antibiotic.
