A scientist discovers a new organism and is trying to classify it. Which observations would most likely indicate that the organism is an animal? whether it is eukaryotic
whether it is heterotrophic
what its form of reproduction is
what its form of locomotion is

Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

Which of the following is directly affected by the cardiovascular system?