After exploring a complicated maze for several days, a rat subsequently ran the maze with very few errors when food was placed in the goal box for the first time. this performance illustrates

Which statement is true about parks and nature preserves?

Which statements describe continental crust? select the three correct answers. a-it is formed in all parts of the continents. b-it is made mostly of volcanic rock. c-it is destroyed by melting near the top of the mantle. d-it is less than 10 km thick. e-its ages ranges from very young to more than 4 billion years old.

Evidence suggests that the ancient romans had a very formal medical system. it included which of the following? click all that apply. medical schools universities physician apprenticeships nursing homes hospital facilities