Pure Aluminum foil distilled water Na Cl (table salt) Gold Bar (pure Au) All of these may be classified as A) elements. B) compounds. C) pure substances. D) organic compound.

Which term is the proposed kingdom that would include embryophytes and charophytes?

If you were creating a presentation that would cover the different types of muscles in the body, which groups of muscle would you need to include? a. skeletal, cardiac, and smooth muscles b. cartilage, tendons, and skeletal muscles c.

Which of the following statements about extinction is true? Choose one: A. Recent species are disappearing so slowly that researchers suggest our present time is another mass extinction. B.

Celery is composed of millions of plant cells. Do these cells contain any water?

Which of the following is not true concerning the flow of energy through an ecosystem? a. Most solar energy is used in photosynthesis. b. Photosynthesis and cellular respiration are performed by plants. c.

Which diagram correctly labels the four layers of the earth

Read the excerpt. Which type of keyword is "Deforestation"? Deforestation Rain forests clean the air by producing oxygen. They are also known to affect the water cycle and weather.

How does the life cycle of a praying mantis differ from the life cycle of a beetle?

Zygote, gamete, and fertilization are key terms associated with sexual reproduction. identify the definitions and examples of these three key terms

Do Cockroaches Evolve in Response to Living with Humans?