Which type of organism to reduce atmospheric carbon dioxide?
1. carnivores
2. producers
3. decomposers
4. herbivores

This is the interaction of two organisms where one is and the other is neither nor harmed.

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.

How many chromosomes are in a human gamete?