Environmental Science
A food web is

The set of prey species that are consumed by animals in an ecosystem
Like a food chain
The tropic (feeding) levels that can be observed in an ecosystem
A set of interconnected food chains, illustrating the tropic relationships among species

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Environmental Science
The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:

The sun's energy is less intense in the Southern Hemisphere
The earth is closer to the sun in January
Over 80% of the Southern Hemisphere is covered with water
The earth is farther from the sun in July

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