Examples of living components in a river ecosystem

Hypothesize whether prokaryotic cells might have been symbiotic before the evolution of eukaryotic

Which is not an effect of smoking on the cardiovascular system? it contributes to atherosclerosis. it increases the blood's tendency to clot. it increases blood cholesterol. it increases the size of arteries and veins?

What is the basic structure of a virus? a capsid surrounded by a protein coat a bacteriophage surrounded by a membrane (wrong) a tiny cell surrounded by a cell wall DNA or RNA surrounded by a protein coat

Which of the following gymnosperm reproductive structures is haploid?

What do we call electrical messages that are sent down an axon of a neuron?

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.