How does the immune system protect our body from diseases? Mention the 3 lines of defenses

What does it mean when we say a trait is dominant? A: Both parents must contribute alleles for this trait to appear. B. Offspring carry unmatched alleles C. Offspring show this trait even if only one parent contributes the allele. D.

Earth can be divided into three zones based on differences and incoming solar radiation identify these zones describe their location and general climate also discuss how the sun's energy strikes each zone.

student uses a balance to determine the mass of a feather. which is most likely to be the correct measurement

Why does sound travel slower in cold air

How is the ozone beneficial to life on earth?

Explain why the fact that invasive species did not co-evolve with the native species unbalances an ecosystem.

23 - You work for a furniture moving company. Your boss sends you to the hardware store to buy tie down rope. He tells you to buy the best deal. What is the best deal on rope? 10 feet for $7.00 20 feet for $13.00 50 feet for $28.00 100 feet for $57.

How does an atom become a positive ion?

The one-celled eukaryotic organisms above are often found in freshwater ponds. What is one characteristic they all have in common? A Nucleus B Cilia C Flagellum D Pseudopodia

This process is used for growth repair it is also a form of reproduction in asexual organisms