Heat travels in slow convection currents of solid materials within Earth's mantle. Heat that rises in these currents A.
is a by-product of frictional forces between Earth's tectonic plates as they slide past one another.
B.
is provided externally by gravitational energy in the Solar System.
C.
is a by-product from the decay of Earth's radioactive isotopes.
D.
is provided externally by the Sun.

25. what does meiosis create? haploids or diploid? somatic cells or gametes?

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

Coat color in cats is determined by genes at several different loci. at one locus on the x chromosome, one allele (x ) encodes black fur and another allele (xo) encodes orange fur. females can be black (x x ), orange (xoxo), or a mixture of orange and black called tortoiseshell (x xo). males are either black (x y) or orange (xoy). bill has a female tortoiseshell cat named patches. one night, patches escapes from bill\'s house, spends the night out, and mates with a stray male. patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. what are the genotypes of patches, the stray male, and the kittens?