Answer:
Australia has large amounts of sandstone and silica.
and
Opal can only be formed where an ocean comes in contact with land.
Explanation:
because it needs standstone and a ocean to be able to create opal
Answer:
A) In gymnosperms, pollination is the process of transferring pollen from a male cone to a female cone.
Explanation:
In gymnosperms, pollination refers to the process of transferring pollen from the male cone to the female cone. After transfer, such pollen germinates to form the pollen tube and the sperm for fertilizing the egg. This is an essential process to life on Earth. Thanks to pollination, plants are able to reproduce. If the reproduction of a species is not particularly successful, this is at a risk of becoming extinct. Therefore, plants have evolved in ways that ensure the survival and success of their progeny.
I believe the answer is C
Answer:
Triangles FGH and UVW
Explanation:
For two triangles to be congruent, they must be the same size and shape. We know these two triangles are the same shape because of the hash marks being in the same places and representing the same values on each one.
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Crust- topmost layer, made out of solid silicate rocks like basalt and granite, 200 C to 400 C
Mantle- composed of rocky oxides and silicates 500 C to 900 C
Core- mostly iron, or other metals 6,000 C