Answer:
Oxygen is the component of Earth's atmosphere which exists entirely as a result of photosynthesis.
1. i
2.a
3.d
4.b
5.e
6.c
7.g
8.f
Answer:
C is da answer
Explanation:
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Answer:
Going by the definition, pioneer species are hardy species which establish themselves in a disrupted ecosystem and trigger the process of ecological succession. These include species like algae, lichens, and mosses, which grow in poor, nutrient-deficient soil, and put up with extreme conditions with immense ease. Most pioneer plants are annuals, i.e., species with a life-cycle of a year, which eventually give way to the emergence of perennials.
Explanation:
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