There are three types of cleavage that you need to be able to recognize in your mineral specimens: rhombohedral, cubic, and basal. which of the three types of cleavage has three planes of cleavage that meet at angles that are 90 degrees? there is no type of cleavage that fits that description. rhombohedral cubic basal

land

explanation:

australia is the flattest continent, and it has vast plains.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.

answer; (d) melting of sea ice;