From which source is it thought that chloroplasts in algae originated

Describe how does the tilt of Earth's axis affect how the sun's rays strike Earth?

A model of segregation of alteles during meiosis is shown here. A student hypothesizes that failure for chromosomes to segregate during melosis might impact the phenotype of the resulting offspring, if those gametes are fertilized.

What's the difference between absorption and digestion?

What are 3 stages of the water cycle

Why do we need joints that permit little to no movement in our skeletons?

Who signs a death certificate

It is appropriate for clients diagnosed with type 2 diabetes to take oral antidiabetic agents and forego recommended dietary changes.

If reviewers find the evidence or reasoning faulty, the manuscript can still be accepted. True or false

What does a graduated cylinder measure? i need this for my biology homework since I do not have my book with me at the moment.

How does heart rate change during and after an exercise is performed for two different periods of time?