Which one of the following is not a combination reaction?

A. HNO3 (aq) + KOH (aq) → H2O (l) + KNO3 (aq)

B. 2CaO + 3CO2 → 2CaCO3

C. Na2O + CO2 → Na2CO3

D. 4Fe + 3O2 → 2Fe2O3

A hawk is a predator for mice. what will happen if the hawk population decreases due to hunting by humans?

Acteria, like the Lactobacillus acidophilus use sugar as an energy source for anaerobic cellular respiration. This process produces much less ATP than aerobic respiration and does not produce carbon dioxide as a by-product.

What level in the hierarchy of life would have the most diversity?

What does nitrogen fixational accomplish

What is muscle tone?

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.