41. What is the name of the process by which excess nutrients cause an increase in plant and algae growth, leading to a decrease in oxygen levels in water?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Eutrophication
42. What is the name of the process by which rocks are changed by heat and pressure into new rocks?
A) Erosion
B) Weathering
C) Deposition
D) Metamorphism
43. What is the name of the process by which molten rock cools and solidifies?
A) Erosion
B) Weathering
C) Deposition
D) Solidification
44. What is the name of the process by which sedimentary rock is formed from the remains of plants and animals?
A) Erosion
B) Weathering
C) Deposition
D) Fossilization
45. What is the name of the process by which a river or stream wears away the land around it?
A) Erosion
B) Weathering
C) Deposition
D) Compaction
