Waves that must travel through

a medium are

A. mechanical.

B. electromagnetic.

C. frequency.

What is the safest action to take when handling unfamiliar insects? Wash your hands after touching the insect. Wash your hands before touching the insect. Use gloves or tongs to handle the insects.

Belinda is interested in dog behavior. She has formed a hypothesis that dogs are able to hear higher-frequency sounds than humans. What should Belinda do next?

Which molecular formula corresponds to this model of a chemical compound? (black = carbon; red = oxygen; white = hydrogen) Cz (OH) 4 C2H204 C₂H4O2 C4H₂O2

1. All macromolecules have the same basic monomer? True or false.

Which type of immunity occurs when antibodies pass from mother to fetus via placenta or from mother to baby via breast milk?

A scientist is carrying out replication of DNA artificially in her laboratory. What will she use to join the gaps on the DNA strand? (a.) the enzyme DNA polymerase (b.) the enzyme DNA ligase (b.) an artificial adhesive compound

Which part of an atom has most of its mass

One of the challenges of wind power is that the ___ of wind ___ day to day depending on weather conditions

How does the human brain interpret and render the surroundings and state of the body?

Eye shine in nocturnal mammals is different from the red eye seen in some flash photographs. eye shine is the reflection of light off the tapetum lucidum. what visual mechanism might explain red eye?