Which of the following is not a main component of an ecosystem?
A. Food chains and webs
B. Physical surroundings, such as rocks, soil and water
C. Living organisms
D. Living and non-living factors that make up the environment.

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

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after making a punnet square using bv bv bv bv you will find that the ratio will be 9: 7 or a 128.6% probability.

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if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.