In the 1600s, which scientist discovered microbes in pond water by using a microscope? theodor schwann robert hooke anton van leeuwenhoek matthias schleiden

Anton van Leeuwenhoek

Explanation:

Anton van Leeuwenhoek made a homemade microscope polishing his own lenses getting an increase of 200 times. He observed that in a drop of pond water nothing could be seen with the naked eye. However, when placing it under his microscope he saw "little animals". This was the first time that microbes were observed.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

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.