There's two ecosystems. A Terrestrial Ecosystem and an Aquatic Ecosystem. Examples of terrestrial ecosystems include the tundra, taigas, temperate deciduous forests, tropical rainforests, grasslands, and deserts. Wetlands, rivers, lakes, and coastal estuaries are all aquatic ecosystems.
Ptolemy's model was Geocentric. This means that it put the earth at the center of the solar system, instead of the sun, with all celestial objects orbiting it. The first person to prove the validity of the heliocentric theory was Nicolaus Copernicus.
the splitting of a single cell into 2 identical cells which are also identical to the parent cell.
C: they convert dead organic compounds into reusable organic compound
Answer:
P = mgh
You have the weight mg (100 N), now multiply by h (300 m).
P=(100 N)*(300 m) = 30000 J
Explanation: