What is responsible for identifying foreign invaders and remains in the system for a long period of time?

antigens

red blood cells

lymph nodes

axons

What happens if you get rid of sugar in yeast

In water, hydrogen bonds hold together

Before the 1800s, Macquarie Island was unused by humans. Since humans began using the island, it has been subject to both accidental and intentional introductions of non‑native species.

According to the World Wildlife Fund roughly when did humans start using more of Earth's resources than can be replenish

Our planet has changed overtime by?

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