The brain is protected by a strong rigid skull. 2. Skin protects the body from drying out. 3. Antibodies neutralize viruses by attaching to them. 4. The rib cage provides protection for the heart and lungs. 5. Germs are prevented from entering the body by the skin. 6. White blood cells engulf and digest bacteria. 7. The spinal cord is encased and protected by the spine. 8. Helper T cells attract other white blood cells to an infection.

If many different species live in an ecosystem, this the ecosystem to fill its a. populations b. niches c. producers d. communities

According to the law of conservation of energy, energy can neither be created nor destroyed. if this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

Pls in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.