B. Luster
C. Texture
D. Streaks
*I chose a random subject*
Textures provides the clues about the formation of igneous rocks are formed . Igneous rock texture depends on the rate of cooling . Small crystals are obtained by fast cooling and last crystals are obtained by slow cooling. Basically textures state the comosition of the rocks. Textures of rock may be of different types like phaneritic and crystalline texture.
Answer:
Answer to 1: a black hole is a tremendous amount of matter crammed into a very small (zero) amount of space. Answer to 2: the top of your head would feel so much more gravitational pull than the tips of your toes that you would be stretched, longer and longer Answer to 3:A black hole is a place in space where gravity pulls so much that even light can not get out.This can happen when a star is dying. The gravity is so strong because matter has been squeezed into a tiny space. because no light can get out, people can't see black holes Answer to 4:stellar, intermediate, supermassive, and miniature. Answer to 5: the asymmetry of bright and dark sections of the ring are caused by the Doppler effect as the matter is coming toward Earth (brighter) or receding (dimmer).
Explanation:
B. parasitism
C. competiopn
D. predator-prey