Which of the following changes igneous or sedimentary rock into metamorphic rock?
a.
heat and pressure
b.
heat and weathering
c.
water and weathering
d.
water and pressure

Several processes form metal ore. match each process to its description. volcanic activity weathering hydrothermal energy rocks break down as they interact with air and water. arrowright density differences and other factors cause metals to concentrate in igneous rocks. arrowright seawater heats up from contact with hot rock, and metals dissolve in it. the water rises and contacts cooler water, causing metal ores to settle on the ocean floor. arrowright

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational