What type of igneous rock texture results from very rapid cooling such that the grains to not have time to align themselves in a particular order?

glassy

phaneritic

porphyritic

Which ecosystem best fits the characteristics listed below? which ecosystem best fits the characteristics listed below? ii. seasonal migrations of millions of wildebeests, zebras, and elephants iii. large numbers of predators, such as lions iv. acacia trees and grasses a. the congo rainforest b. the african mangroves c. the serengeti grasslands d. the sahel

What geologic process is related to caldera formation?

According to speculation and study, what will happen to the global birth rate in about 40 years? (1 point)