Describe how three different organism - human, flatworms and fern obtain the oxygen they need for survival.

What type of stem cells produces muscle cells?

Down's syndrome results from people having an extra copy of chromosome 21 in their cells as shown here. People with Down's syndrome have both a lower IQ and a shorter life expectancy than those without Down's syndrome. This is an example of

9) Classify the following as horizontal forces (H), vertical forces (V), or both (B). Using a wheel barrow. A.) Horizontal Forces (H) B.) Vertical Forces C.) Both 10) Classify the following as horizontal forces (H), vertical forces (V), or both (B).

Proteins that regulate chemical reactions in the body but remain unchanged by the reaction are known as -

Pathogen definition in your own words

Was Durer Roman Catholic or Protestant?

What is climate? How does climate change affect ecosystems?

Which of the following best describes the dust gas and celestial bodies of the Milky Way galaxy

How is an atom and element related?

What is conservation of energy