21 How much of Earth's surface is covered by sea water? 22 On land, where is rain water collected? 23 Where can we find the Atlantic forest in Brazil? 24 What happens when river freshwater reaches sea water? 25 Why are mangroves essential to sea life? 26 What kind of living beings are corals? 27 What do corals feed on? 28 What is plankton? 29 Why are plankton essential for maintaining marine life? 30 How do fish from deeper regions of the sea attract other fish to eat?
Respostas
Resposta:
21 - About 71% of the Earth's surface is covered by liquid water.
22 - the simplest way to do this is through the roofs of the houses. When falling on the roof, rainwater runs down the gutters and then goes on to storage
23 - Today, the Atlantic Forest can still be found in almost the entire country (except in Mato Grosso, Maranhão and the North Region), but in small quantities. The highest concentration is in the Vale do Ribeira, in São Paulo.
24 - When a river meets the sea, the waters mix, which is what occurs in mangrove areas and estuaries. This water is neither sweet nor salty, but brackish water. The organisms that live there are adapted to the conditions of this environment. The roots known as "struts" support trees in the soil in mangroves and estuaries.
25 - Mangroves are home to oysters, seahorses, turtles, manatees, some types of sharks, mollusks, crustaceans, sea birds, mammals, reptiles, amphibians and many types of fish. They protect the shoreline from erosion and phenomena such as hangovers and even tsunamis
26 - Corals are cnidarian animals of the class Anthozoa, which secrete a calcareous or organic exoskeleton, unlike sea anemones, which belong to the same class. ... Adult individuals are individual or colonial polyps and are found in all oceans.
27 - They feed on small living things, like zooplankton and small fish
28 - set of organisms that live dispersed in fresh, brackish and marine waters or in the air, with very little or no mobility capacity, being transported by the currents.
29 - the importance of plankton in nature enables the survival of thousands of species, from the function of capturing carbon dioxide from the atmosphere and producing oxygen, responsible for phytoplankton, considered the main source of oxygen for the planet's atmosphere.
30 - Most creatures have to rely on food that flows from top to bottom. These creatures live in very demanding environments, such as the abyssal zone which, thousands of meters below the surface, is almost completely devoid of light, where the water is between 3 and 10 degrees. Due to the depth, the pressure is between 20 and 1,000 bars.