Explain the current and predicted impacts of human activity on atmospheric carbon dioxide levels and Earth's temperature.

Global warming

Explanation:

Human activity, factories, burning fossil fuels, and generally producing smoke, increases carbon dioxide--a greenhouse gas--levels in our atmosphere, causing the rise in temperature because heat from the Sun is trapped in the Earth's atmosphere.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.