The Earth's core is

a. hotter than the crust but cooler than the mantle.

b. cooler than the crust but hotter than the mantle.

c. hotter than both the crust and the mantle.

d. cooler than both the crust and the mantle.

The scientific explanation that suggests the universe is expanding relies on two main concepts

What is the definition of crossing over / recommendation?

How might the fatty deposit and the arterial wall affect the nervous system?

Why are plants unable to grow at the bottom of lakes? The water is colder at the bottom. Sunlight does not reach the bottom. Groundwater feeds into the bottom. Less fresh water is found at the bottom.

Which of these processes push ocean plates away from each other during the formation of the ocean floor?

The genotype for Tay-Sachs disease is tt. A homozygous dominant man and a heterozygous woman have a child with the genotype Tt for Tay-Sachs. Which term describes their child? A. purebred B recessive C. affected D. carrier

How many electrons are in a nucleus

In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific community? a. Chromosomes are made up of protein and nucleic acid. b. Chromosomes are found in the nucleus. c.

In science, what is the difference between relative age and absolute age?

Blood is considered a tissue because blood-