All the rocks shown below were formed as high amounts of pressure caused other types of rock to change form.
Which type of rock is shown in the image?
A. Extrusive igneous
B. Intrusive igneous
C. Sedimentary
D. Metamorphic

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Find the mass in grams of 1.37x1020 particles of h3po4

Stage in which a typical star has completely stopped fusion