Connecting link between reptiles and birds is

Connecting link between reptiles and birds is

Options

(a) Dodo (b) Sphenodon (c) Dimetrodon (d) Archaeopteryx

Correct Answer:

Archaeopteryx

Explanation:

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Energy enters ecosystem through

Energy enters ecosystem through

Options

(a) herbivores (b) carnivores (c) producers (d) decomposers

Correct Answer:

producers

Explanation:

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Crop rotation is used by farmers to

Crop rotation is used by farmers to

Options

(a) increase soil fertility (b) increase N₂ content of soil (c) increase organic content of soil (d) increase community are

Correct Answer:

increase soil fertility

[…]

Nitrates are converted into nitrogen by

Nitrates are converted into nitrogen by

Options

(a) denitrifying bacteria (b) carbon fixing bacteria (c) nitrogen fixing bacteria (d) phosphorus fixing bacteria

Correct Answer:

denitrifying bacteria

Explanation:

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