Asample has passed through 6 half-lives, what is the ratio of parent isotopes to daughter isotopes? a. 1 parent isotope for every 6 daughter isotopes b. 6 parent isotopes for every 1 daughter isotopes c. 1 parent isotope for every 64 daughter isotopes d. 1 parent isotope for every 63 daughter isotopes

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

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?