What is a scientific hypothesis? What characteristics must a hypothesis have to be useful in science?

Which of the following are plausible hypotheses that could explain why mammals never evolved unidirectional airflow through their lungs, while birds did? Select one or more: a.

Which of the following hand tools has a beveled end? a) nail set b) claw hammer c) compass d) chisel

What do you expect to happen after administration of a dose of intravenous epinephrine during a resuscitation

Duchene muscular dystrophy, or DMD, is a recessive, x-linked disease. What would you expect to see in the offspring of a woman who has DMD and a man who does not have the disease? All of their sons and none of their daughters would have the disease.

How many moles of oxygen are needed to burn 1.33 moles of methyl alcohol (CH3OH) ? 2CH3OH + 3O2 2CO2 + 4H2O

What happens when a ecosystem is in equilibrium.

Types of graphs is best for plotting the percentages of a whole value in a data set?

Why do people prefer eating apples more than mangoes?

For 3D microscopic use what microscope would you use?

Why is it important that capillaries are embedded throughout skeletal and muscle tissue?