Explanation:
All the spheres of the earth are connected including the geosphere and the biosphere. The biosphere depends on the geosphere (the rocks and minerals of the earth) mainly for nutrients required for growth and for habitat.
Due to this connection, therefore, if the harmful substance was to enter the geosphere, it would negatively affect the biosphere. It could be from the fact that if mineral of the substance is absorbed or taken up by organism of the biosphere, they die. This would destroy ecosystems and hence reduce the biosphere (the living component of the earth)
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For more on spheres of the earth check out;
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By transfer through cellular respiration.
The coorect answer is 175m
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 train traveled 100km (50x2) down and then 375km (75x5) up. So the train is 275km (375-100) up from where it started.