A person went to the doctor because he was having a hard time breathing while going up steps The person is most likely having a problem with his 1) Digestive system
2) Nervous system
3) Respiratory system

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Urgent in guinea pigs, black fur (b) is dominant over white fur (b). cross a heterozygous (hybrid) black guinea pig with a homozygous (purebred) white guinea pig. complete a punnett square, identify the genotype(s), phenotype(s), and probability (% and fraction) that the offspring will be black and white?