Which of the following statements is correct?
A. Carbon stays only in the biosphere
B. Carbon is sometimes added to the Earth's closed system
C. Carbon is sometimes destroyed in the Earth's closed system
D. Carbon is exchanged by all four spheres of Earth

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?

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm