Which of these is responsible for ridding the body of waste?

A) nervous system

B) Excretory System

C) Circulatory System

D) Reproductive System

Which of these is a flap that shuts off the passage to the trachea and lungs?

In pea plants, green pod color is controlled by a dominant allele. Yellow is controlled by a recessive allele. Explain why a plant with yellow pods can never be a hybrid

Jane is observing a cell under an electron microscope. She identifies an organelle having an outer and an inner membrane. She also notices that the outer membrane is smooth while the inner one is highly folded. Which organelle is Jane observing?

Ribosomes are only found in prokaryotes. True False?

Which of the following is the main theory for water movement in plants? a. root pressure b. capillary action c. translocation d. cohesion-tension

What would occur in the body's muscles if there was a drastic decrease in calcium production?

Which is not a step in most scientific investigations? collecting data through observation and measurement observing and experimenting to test a hypothesis proving a theory and writing a new scientific law developing a hypothesis to explain

What makes up a biological community?

Which of these describes the Earth's outer core? A: Hot Solid B: Cold Liquid C: Cold Liquid D: Hot Liquid

If ice we're, like most other substances, more dense than it's liquid form, what would this mean for bodies of water that freeze in the winter? What would happen to the organisms that live in them?