What are the steps of muscle contraction?

What did the presence of photosynthetic prokaryotes allow A. more oxygen to enter the atmosphere B. more water to enter the atmosphere C. more sunlight to enter the atmosphere D. more hydrogen to enter the atmosphere

Why is the gallbladder absent in rats?

As you go deeper into the ocean the temperature increases or decreases or stays the same

What is the overall chemical equation for cellular respiration?

Plants have cells that contain chloroplasts. Why must their cells contain mitochondria as well?

Which of the following contain only prokaryotes? A) Domains Bacteria and Eukarya B) Domains Archaea and Bacteria C) Only Domany Eukarya D) Domains Archaea and Eukarya

The word below is the scientific name of a species of protists that causes algal blooms. Which of the following answer choices best represents the bolded word in the scientific name below? Karenia brevis class species kingdom genus

What is a Barr body, and where is it found in a cell? b) Define the Lyon hypothesis.

Which phylum if algae stores food in the form of floridean starch

The moon rotates around the earth at a speed of 2,288 miles per hour. Is the moon accelerating?