What is the composition of the asthenosphere? O All the water on earth
Partially melted rock with a higher percent of iron than the crust
All solid iron and nickel
The continental bedrock and ocean floor

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

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?

9. the history of life on earth is recorded in