B. toilet
hope this helps :)
You have a typo. I think you mean ectotherms and endotherms. Ectotherms, commonly call cold-blooded, cannot regulate body temps, while endotherms, commonly called warm-bloods, can.
To be honest I got done with using a microscope about a month ago but if you want answers i'd just search it up online
Red blood cells<span> carry oxygen throughout the</span><span>body,h</span>emoglobin carries the oxygen to all the organs and tissues in the body.
The correct answer is D because let say these scientists wanted to find a counter example to a theory, they would have to collect data, prove the results and yes prevent bias. Hope this helps!
