The correct answer is C) 70/x.
To calculate doubling time, rule of 70 formula is used. For this the annual growth rate of the population is required. In this question growth rate is given x. Thus, doubling time = 70/ growth rate.
Therefore, doubling time = 70/x.
4. Underwater plants provide oxygen, food, and shelter. They are helping fish and other organisms living in the water
5. It can stabilize sediments, generate organic material needed by small invertebrates, and add oxygen to the surrounding water.
It’s the third one. Increased average temps
Since organic and inorganic forms contain carbon, it's safe to say that the carbon stored in fossil fuels are from the decomposed plants and animals that made the fossil fuels.
Explanation:
Fossil fuels are made from decomposing plants and animal matters. These fuels are found in the Earth's crust and contain carbon and hydrogen (hydrocarbon).
Carbon is stored in the lithosphere in both inorganic and organic forms. Inorganic deposits of carbon in the lithosphere include fossil fuels.
Answer:
1,250,000 shrimps per m³
Explanation:
Population density refers to how dense an area is per unit area/volume, and it is calculated by dividing the number of individuals in that area (population) by the area/volume of that area. That is;
Population density = population (N)/volume
According to this question, a certain lake has a volume of about 480 m³ that harbors a 600 million of freshwater shrimp. This means that;
Population density of the lake = population of shrimps ÷ volume of lake
Population density = 600,000,000 ÷ 480
Population density = 1,250,000 shrimps per m³