Environmental Science
Our seasons are caused by:

All of these
The angle at which sunlight reaches the earth
Only (b) and (c) are correct
The length of the daylight hours
The changing distance between the earth and the sun

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Environmental Science
Which of the following statement is incorrect regarding ecological pyramids

The pyramid of numbers is upright in grass land ecosystem
The pyramid of energy is inverted in ocean ecosystem
The pyramid of biomass is upright in grass land ecosystem
The pyramid of biomass is inverted in aquatic ecosystem

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