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

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Environmental Science
Our seasons are caused by:

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

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