Pls help Harry Hess found evidence of Earth's magnetic reversal in the pattern of rocks on the ocean floor. Which layer of the Earth is responsible for Earth's magnetic reversal?

a) Crust
b) Mantle
c) Core
d) Lithosphere

Awic dietitian is meeting with a client who has an infant and a young child. the mother says that the young child is a very picky eater and will only eat crackers and juice. the health worker notices that the child's hair is brittle, his nails tear easily, and the skin inside his lower eyelids is very pale. these are all signs of iron deficiency.

Disinfection of impression materials is usually accomplished by a. sterilization with high heat. b. spray or immersion in a chemical disinfectant. c. sterilization with steam under pressure. d. allowing the impression to sit 24 hours in water until all the organisms die.

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?