What is the best summary of the passage external and internal stimuli? A. An external stimulus comes from outside of the organism.
B. Stimuli trigger responses in organisms that allow them to maintain constant internal conditions through homeostasis.
C. Homeostasis in a set of mechanisms that work to maintain stable internal conditions as external conditions change.
D. Phototropism is a plants response to turn toward light. Gravitropism is a plants response to grow upward against gravity

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

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?

Which greenhouse gas is emitted when burn fossil fuels for energy? a. nitrogen b. oxygen c. carbon dioxide d. helium