Suppose Earth's rotation axis was not tilted relative to its orbital plane. If Earth's rotation axis were exactly perpendicular to its orbital plane, then a.everywhere on Earth would always experience equal amounts of daylight and nighttime.
b.more than one of the above is true.
c.Earth would not experience seasons.
d.the Sun would always rise and set at the same points on the horizon.e.the ecliptic would line up with the celestial equator.

1. Deforestation

2. Surface Warming

3. Vehicle Use

There are many dangerous causes of global warming, one being much worse than the others. The worst reason would be deforestation, when vegetation is burnt it causes high levels of CO2 in the air this causes global warming. Second worst reason is surface warming, when we make new roads paving over vegetation it is causing the earth to slowly heat up! The last, but most interesting reason would be vehicle use, vehicles burn up carbon which releases into the atmosphere which is causing air pollution and global warming! We need to preserve our planet for generations to come!

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Have a good day! :)