Answer/explanation:
Role of gravity in water cycle
Gravity moves air and ocean water. The gravity force less dense air and water to move upward ( cool dry air is denser than warm, humid air and cool, salty water is denser than water downward.
The warm water is moved to the surface by gravity where it is heated up with sunlight and evaporates keeping the water cycle moving.
The gravity also affects the precipitation, when the clouds convey too heavy water droplets, pulling the droplets to fall in form of rain towards the earth.
The answer is A. Energy first enters an ecosystem through light energy that is absorbed through photo-synthesizers
Answer:
The molecular weight (molar mass) of any gas is the mass of one particle of that gas multiplied by Avogadro's number (6.02 x 1023).
Explanation:
How do you find the molar mass of a gas?
First the ideal gas law will be used to solve for the moles of unknown gas (n). Then the mass of the gas divided by the moles will give the molar mass.
Answer:
Human body systems can be compared to anything that has many parts doing specialized jobs to help the whole. Here's an example: The human body is like a city. The nervous system of the body is like the government of the city because the nervous system controls the body like the government controls the city.
In a chemical reaction one or more reactants combine or react to form one or more product(s) with different chemical and physical properties.
When aqueous sodium sulfide reacts with aqueous copper(II) nitrate results in the formation of aqueous sodium nitrate and solid copper(ll) sulfide.
First, identify the chemical symbols for the elements in the compounds.
Sodium sulphide = 
Copper(II) nitrate = 
Sodium nitrate = 
Copper(II) sulfide = 
The chemical reaction is given as:
Now, balance the chemical equation:
For balance the equation, multiply by 2.
Thus,
