First answer gets brainliest!

which of the following statements describes the difference between physical and chemical weathering?

a. physical weathering affects rocks, while chemical weathering affects only minerals.

b. physical weathering is caused by ice, while chemical weathering is caused only by water.

c. chemical weathering changes the composition of a rock, while physical weathering does not.

d. chemical weathering affects all kinds of rocks, while physical weathering does not.

Chemical weathering changes the composition of a rock, while physical weathering does not.

Explanation:

Chemical weathering of rocks is a chemical reaction. A chemical change is known to change the composition of a substance. Once a substance is subjected to a chemical reaction, a new substance is automatically formed thereby changing the composition of the original substance.

A physical weathering agent does not affect the composition of rocks. This a major difference between chemical and physical weathering processes. For instance, physical weathering caused by ice has nothing to do with internal rock composition.

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015