How does the density of ice compare to that of liquid water and why is that property important to aquatic organisms? (1 point)
a. the density of ice is higher than that of liquid water, which means that ice forms from the bottom of lakes upward, protecting aquatic life in winter.
b. the density of ice is lower than that of liquid water, which means that ice forms from the top of lakes downward, protecting aquatic life in winter.
c. the density of ice is higher than that of liquid water, which means that ice forms from the top of lakes downward, protecting aquatic life in winter.

The correct answer to the question is : B) The density of ice is lower than that of liquid water, which means that ice forms from the top of lakes downward, protecting aquatic life in winter.

EXPLANATION:

The density of a substance is defined as the mass of the substance per unit volume.

Hence, the density of the substance is inversely proportional to the volume of substance.

The volume of certain amount of ice is greater as compared to the same amount of water due to its molecular arrangement. It signifies that density of ice is lower than water. Hence, ice formed on the top of lake is downward.

During winter season, it is the ice layer formed on the surface of water in lakes keeps the aquatic animal safety from the intense coldness.

Hence, the correct explanation is second statement.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

3. dark matter

empty space could also be a simple vacuum