Which of the following is an example of chemical weathering?

Wind carrying sand from a beach.
A river carrying dirt into a lake.
Friction between two rock surfaces grinding away minerals.
Chemicals in water dissolving minerals in rock.

Saul's excuse for his disobedience was: 1. he saved the sheep and oxen to feed the nation of israel. 2. the people spared the sheep and oxen to give as a sacrifice to the lord. 3. he didn't hear samuel's instructions to completely destroy the amalekites. 4. he wanted to show mercy to agag, the king of the amalekites.

Carlo is wondering what causes plants to grow at different rates. carlo’s hypothesis is “plants will grow more when the day is longer.” what would be the difference between the test group and the control group in this experiment? type of soil type of plants exposure to sunlight method for measuring the growth

The authors use the word “backbone” in lines 3 and 39 to indicate that