The scientist wants to investigate the mechanism that causes heart rate and and respiratory rate to increase. Which of these variables could be decreased to observe an increase in both heart rate and respiratory rate?
O amount of oxygen in the air
amount of time on the treadmill
O number of subjects in the study
O size of the room

What happens when a magniseum ion ia atracked to a chlrene ion

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent