Which of the following describes all animals? a. all animals have back bones. 2. all animals are multicultural. 3. all animals control their own body temperature. 4. all animals are vertrbrates.

A wave travels at a speed of 74 m/s. If the distance between crests is 12 m, what is the frequency of the wave? Use f =

Which of the following marine ecosystems consists of an aphotic zone? A. The open ocean B. The coastal ocean C. The intertidal D. The wetland

Which of the following are made of repeating sugar units? Choose all answers that are correct. A. nucleic acids B. carbohydrates C. proteins D. lipids

A plant has completed the haploid phase of its life cycle and now enters the diploid phase. Which of these will it produce during this phase? A. sporophytes B. gametophytes C. gametes D. spores

A manufacturer claims its cleanser works twice as fast as any other. Could test be preformed to support the claim?

Which process forms an ocean trench.

Which U. S. states make up wolves' historic range?

How would an increase in population affect an aquifer?

Which animal population do scientists frequently study in order to identify specific ways to evaluate the impacts of contaminants on biological communities? a. bottlenose dolphins b. giant tortoises c. mallard ducks d. swan geese

Which postmortem parameter begins at 3 days? A) rigor mortis B) putrefaction C) Livor mortis D) algor mortis