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.
Canada shares a long land boundary with Alaska and a long boundary with the Arctic Ocean to the North.
It also has a very short boundary with the Pacific Ocean, around Vancouver.
It actually also shares a maritime (water) border with Greenland - although if we discount this kind of border, we can accept Greenland as the correct answer.
Answer:
The first one in column 1 goes to the 4th one in column 2
The second one in column 1 goes to the 1st one in column 2
The third one in column 1 goes to the 3rd one in column 2
The fourth one in column 1 goes to the 2nd one in column 2
Explanation:
- - Ocean ridges are most commonly located around halfway between the center of 2 continents, creating a ocean ridge.
