What did placoderms look like?

What is true of all eukaryotes

The first eukaryotes were undoubtedly A) muscle cells B) protistans C) neurons D) none of above

Which of these is a supporting service people get from the ocean? A. Water cycling B. Seafood C. Water sports D. Climate moderation

Ddt was sprayed in a long island salt marsh over a period of years for mosquito control. a portion of the food web is as follows.

Compare and contrast Base and Acid

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.