Crude density and ecological density are both related but different. Ecological density is the portion of land that a certain species can colonize, where as crude density is the land within the organism's range.
Answer:
Health
Explanation: Knowing an individuals breathing rate heart rate and or blood hormone levels could help you find weather or not that person has any heart problems or just health problems in general. Hope this helped :)
Answer:
The answer is C. there are risks and benefits associated with gene therapy
not b, since they used it on people/animals who were blind
not a, since 70% tests have been on cancer
photosynthesis and respiration