The correct answers are:
- Only about 3 percent of Earth's water is freshwater;
The amount of freshwater, out of all the water on the planet, is very low, only around 3%. Considering how much we spend of it, and how much we are polluting it, it is alarming, and urgent measures have to be taken in order to preserve this essential life element.
- About 75 percent of the freshwater on Earth is frozen in ice sheets;
Not just being only 3% out of the total water reserves on the planet, the majority of the freshwater is not actually usable, as around 75% (68.7% by the newest data) of it is actually frozen. The ice sheets on the poles, as well as the glaciers, are holding most of the freshwater in them, and even if they melt, the water will become saline and not usable because it will mix with the ocean waters.
Combustion releases energy from a fuel.
Carbon monoxide: (CO) is other type of carbon oxide produced from the combustion of fuel. It is produced when there is insufficient O2 (or oxygen),
I believe the correct answer from the choices listed above is the first option. The element that would most likely have a positive electron affinity would be sodium, Na. Electron affinity is defined as the change in energy of a neutral atom when an electron is added to the atom.
Answer:
80g=0.08kg
20cm=0.02m
density=m/v
= 0.08/0.02
=4kg/m^3
it is less than density of water so it floats
The answer is c hope i helpd
