Biological weathering is caused by living organisms, such as microbes, animals, and plants. Water, oxygen, and rocks are nonliving things (though water and rocks may be capable of weathering), and only plant roots fits the definition of biological weathering. So the correct answer for #1 is A.
Frost wedging occurs when the little water content in rock freezes, expanding and forcing the rock apart. Eventually, enough freeze-melt cycles causes the rock to break apart little by little. This is due to ice's density being less than that of water, meaning that it is because water expands when frozen. So the answer to #2 is A.
Answer:
Italy is shaped like a boot kicking a ball. Learned this in social studies. Look at a map! Hope it helps! (:
Explanation:
I know it might be too late, but I believe the answer is B) US research and design with mostly Asian production.
This layer of soil is called the A horizon.
Did any of them feature older actors? ... Each culture has a certain set of expectations and assumptions about aging, all of ... In North America, the experience of being elderly has changed greatly over the past century.
