depends on 42
subjecting an experimental group of plants to an atmosphere with a higher oxygen concentration
subjecting an experimental group of plants to an atmosphere with a higher carbon dioxide concentration
subjecting an experimental group of plants to a special soil that has been enriched with a new fertilizer
subjecting an experimental group of plants to air that gaseous nitrogen has been added to
Answer:
Explanation:
our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material.
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Answer:it adds layer of rocks
Explanation:
Because fossils add up on top of each other
Answer: D
Explanation:
Ensuring that they don't lose their habitat and protecting them is key. Not adding in other invasive species or overexploitation. Conserving would cut the pollution (and if done globally it would cut back global warming). So if we protect the current species more will come or the current will evolve and be able to reproduce.
