Aballoon filled with helium has a volume of 0.50 m3 at 21°c assuming the pressure and mass remain constant what volume will the balloon occupy at 0°c

Calvin ate a candy bar, which caused his body's blood glucose levels to become unbalanced. his body responded by initiating a feedback mechanism to return his body to homeostasis. place the steps of this feedback mechanism in order, starting with the blood glucose imbalance that occurred after calvin consumed the candy bar. a) calvin's blood glucose levels decreased. b) calvin's pancreas stopped secreting insulin. c) calvin's body cells started to take up glucose and store it as glycogen. d) calvin's blood glucose levels increased. e) calvin's pancreas started secreting insulin.

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .