Which of the following tests can best you classify a rock as sedimentary, metamorphic, or igneous?
a) pour acid on it and see if it bubbles.
b) examine its layers, texture, and color.
c) hold a light to it and examine its luster.
d) examine its streak color.

Based on current rates the earths human population is expected to grow how much by 2050

Which is the most reasonable capacity of a water pitcher. m a 2 ml b 20 ml c 2 l d 20 l

Altocumulus, altostratus, cirrocumuls, cirrostratus, cirrus, cumulonimbus, cumulus, nimbostratus, stratocumulus, stratus 8.) clouds with tallest vertical development 9.) low altitude clouds in solid layers that produce rain 10.) high altitude thin flat layers of clouds 11.) rain clouds that form under stable atmospheric conditions 12.) middle altitude clouds with globular appearance