When caterpillars ingest a particular african plant it causes the butterfly after metamorphosis to produce 2 heads and die shortly after.

a. true
b. false

All organisms contribute some water to the water cycle by conducting

Which of the following do all living things have in common

Chronic obstructive pulmonary disease (copd) makes it difficult for the respiratory system to deliver oxygen to the lungs. the scientist wants to use a computer simulation to model how copd affects heart rate and respiratory rate during exercise. she will compare the results of the simulation to the results she gathered in her previous study. which of the following would be an appropriate dependent variable for the new study?