ROCKY PLANETS (Mercury-Venus-Earth-Mars-Pluto). The rocky planets are mostly made up of rock and metal. These planets are very heavy and move slowly. They also do not have rings and very few moons. GAS PLANETS (Jupiter-Saturn-Uranus-Neptune). The gas planets are mostly made up of gases (hydrogen and helium).These planets are light for their sizes (just like a big air balloon) and move quickly. They have rings and lots of moons.he gas planets are mostly made up of gases (hydrogen and helium). These planets are light for their sizes (just like a big air balloon) and move quickly. They have rings and lots of moons.
Plants that live in streams are also referred to as aquatic plants. These plants have adapted to live in water or fully saturated soil. Most aquatic plants are perennials that reproduce by using their flowering parts, also called angiosperms. The leaves of aquatic plants tends to be large and flat to maximize the suns rays.
Aquatic Ecosystems An aquatic ecosystem is an ecosystem located in a body of water. It comprises aquatic fauna, flora and the properties of water too. There are two types of aquatic ecosystems, Marine and freshwater.The Marine Ecosystem. Marine ecosystems are the largest ecosystems with coverage of nearly 71% of the Earth's surface and containing 97% of the planet's water. The water in Marine ecosystems has salts and minerals dissolved in them in high amounts.hese are the ecosystems where abundance of flora (plants) is seen and they have a large number of organisms living in relatively small areas. Therefore, the density of life in forest ecosystems is very high. Any small change in the ecosystem can affect the whole balance and collapse the ecosystem.