Answer:
The direct threats of invasive species include preying on native species, outcompeting native species for food or other resources, causing or carrying disease, and preventing native species from reproducing or killing a native species' young.
Explanation:
The answer would be: <u>Molten material that cooled quickly.</u>
Igneous rocks are formed by the cooling of molten material. So we can cross out the last two choices. The rock has no identifiable crystals so it is most likely an Extrusive igneous rock. They form on the surface where they cool quickly.
Those that form underground are called intrusive rocks. They cool slowly allowing enough time for crystal formation.
B is correct. Krypton is a noble gas which has a full outer shell of 8 electrons and is generally unreactive because of it.
Answer:
I think this is the ans
Explanation:
cold environment as biodiversity means one particular ecosystem or habitat so in a cold environment only cold breeze flows.