If a radioactive substance's half-life is 40 years, about how much of a 30-gram sample will be left after 160 years? a. 1.9 grams b. 3.8 grams c. 7.5 grams d. 15 grams

Amouse that is homozygous for the dominant trait has the genotype . it has . a mouse that is homozygous for the recessive trait has the genotype . it has . image of fur color of mice

2. does the given statement describe a step in the transformation of the graph off(x) = x2 that would result in the graph of g(x) = -5x + 2)? a. the parent function is reflected across the x-axis. o yes nob. the parent function is stretched by a factor of 5. yes noonc. the parent function is translated 2 units up.o yes

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?