Please help me I will give you the brain thing and extra points. part 3

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

How does concentration affect reaction rate

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.