PLEASE HELP I DIDNT DO THE LAB In this lab, you used the characteristics for classifying minerals and rocks to identify mineral and rock samples. To identify the relative hardness of minerals, you conducted a test. To determine the color of the powder of a mineral, you conducted a test. You also observed properties of minerals and rocks to identify them.
OPTIONS:
cleavage, color, scratch, streak
(Both questions have the same answers)

20 POINTS, ANSWER ASAP!

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?