Freud's theory of personality is called a tripartite model. What does that mean?

A)The theory is centered on the concept of the trip from childhood to adulthood.

B)The theory focuses on the three stages of a person's life.

C)The theory is an Austrian model of wellness.

D)The model has three parts.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

One reason scientists are trying to develop fuel sources from corn and sugar is because these sources are renewable fossil fuels are being depleted these crops can be widely grown all of the above