2. Living things can weather and erode the Earth. Which statement is true?
A Lichen and plant roots secrete chemicals which cause chemical changes in rocks and cause physical
weathering
B. Lichen secrete chemicals which cause chemical changes in rocks and cause chemical weathering, but
plant roots split rocks apart through physical (mechanical) weathering,
C. All living things cause chemical weathering.
D. Living things only cause mechanical weathering

B

Explanation:

Lichen secrete the chemicals, but plant roots don't secrete chemicals, they dig their roots through the rocks.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?