Lori is learning about two parts of the rock cycle: weathering and erosion. She needs to explain how
weathering and erosion are different. Which of the following correctly describes the difference
between weathering and erosion?
O Weathering is the breaking down of rocks; erosion is the movement of weathered materials.
Weathering is the movement of rocks by wind; erosion is the movement of rocks by water.
Weathering is the formation of rocks from lava; erosion is the weathered materials from an area.
Weathering is when rocks change from one type of rock to another; erosion is when rocks are broken down.

Food provides molecules that serve as fuel and building material for all organisms. plants undergo photosynthesis and make their own food. other organisms, like us and the horse seen above, are consumers and eat food. how do all organisms use food as fuel? be sure to include the name of the process in your answer. me.

Select all the true statements about the cosmic microwave background radiation

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.