In two to three paragraphs, name your ecosystem, tell where it is (including state and nearest town), state its limits, discuss why defining limits is important, and include any data
you collected during your study of the physical limits of the ecosystem. Explain why this
ecosystem is an open system. You may include a photograph or map of your ecosystem,
but these are not mandatory. Be clear, thorough, and scientifically accurate.

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic

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.

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.