Differences between independent, dependent, and controlled variables

People and most other animals wake up and go to sleep on a regular basis, at about the same time every 24 hours. what causes this 24-hour cycle?

The Chlorophyll molecules work as energy convertor devices. Explain

What is a disadvantage to Aristotle's method of classification?

How does altitude affect air pressure and density? Check all that apply. Air is less dense on a mountaintop than at sea level. Air pressure is lower at low altitudes. As you climb a mountain, air pressure increases.

A structure that seems to serve no purpose in an organism is called: A. homologous B. vestigial C. dichotomous D. fossilized

Which of the following represents the treatment option most likely to avoid the evolution of drug-resistant HIV (assuming no drug interactions or side effects) ?

Which of the following connective tissues is richly vascularized and consists of more cells than extracellular matrix? A) Adipose b) Dense regular C) Areolar D) Hyaline cartilage

Humans and apes have five fingers they can use to grasp objects. do you think these are analogous or homologous structures? explain your answer.

During which two minute time period is the temperature of the water changing fastest?

The human body is made up of: nucleus absorption cells neurons