If it takes 10 hours for the bacteria colony to fill all of its petri dish, how long must it have taken for the colony to fill half of the petri dish?

Which statement about body cells is true?: A. they can be seen with the unaided eye. B. A few thousand cells make up the human body. C. They are organized into tissues and organs. D. They get energy from oxygen.

Which of the formed elements of the blood determines ABO blood types? A. White blood cells B. Red blood cells C. Antibodies D. Plasma

Which group on the periodic table contains only metals? Question 5 options: A the last group B the second group C along the top D along the bottom

Which of the following would be located at the bottom of an energy pyramid found in the ocean? shark crustaceans small fish phytoplankton

Budding and regeneration are two types of asexual reproduction. True or false

Women have testosterone, but they have less of it than men true or false

Amphibians have internal fertilization that requires the presence of water. true or false

Scientists have discovered that the inner core of Earth is a solid while the outer core is a liquid. What is the cause of this observation?

Damage to which structures may result in a heart murmur?

How do humans effect the ecosystem