Answer:
Densities of the solids and the liquids are expressed in units of grams per cubic centimeter (g/cm³) or in grams per milliliter (g/mL).
Densities of the gases are usually expressed in the units of grams per liter (g/L).
Explanation:
Density of a substance can be defined as the ratio of its mass and its volume.
The constituting atoms in the solids and liquids are fairly packed closely together.
<u>In general, a 1 cm³ or 1 mL volume of most of the solids and the liquids has mass of several grams.</u> Thus, densities of the solids and the liquids are expressed in units of grams per cubic centimeter (g/cm³) or in grams per milliliter (g/mL).
The constituent atoms or the molecules in the gases are far apart from each other when compared to the solids and the liquids.
<u>Thus, gases are much less dense and even about 1 L of gas have mass in range close to 1 gram.</u> Thus, densities of the gases are usually expressed in the units of grams per liter (g/L).
<u>Also, the density of the gases also depend upon the pressure and the temperature but these factors much not influence the density of the solids and the gases.</u>
No it doesn't. The density of a gas depends on the temperature that is found. If it's hot the density reduces since its molecules spread, while at cold temperatures the density rises.
Answer:
60
Explanation:
0.125m x0.05=0.225
0.225÷100=56.0
56 rounded to the nearest ten is 60
The options to the question above are:
A-the population of cladophora will decrease, resulting in an increase in the trout population
B-there will be a larger decrease in the trout population, resulting in an increase in damselfy nymphs
C- increased stream volume will provide more area for the trout to reproduce, causing a large increase in the population of algae
D- the population of trout will decrease because the population of damselfly nymphs will decline
The most likely immediate effect of an increase in runoff containing cadmium on the trophic structure of the river community is that there will be a larger decrease in the trout population, resulting in an increase in damselfy nymphs
- Cadmium is known to increase in the food chain and also pile up in humans. It is often taken up in water by algae, insects, and then up the food chain to fish, where it is piled up it in their gills, liver and kidneys .
It is a very toxic heavy metal that comes into the environment through anthropogenic sources such as poor quality of surface water, marine water.
Conclusively we can therefore say that Option b is the right answer because trout is negatively affected by but not the case with damselfly.
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