Lola makes a list of what she learned about spiral galaxies. 1. they are made of bulges and arms 2. the bulges contain mostly old red stars . 3. the arms contain mostly old blue and blue -white stars 4. spiral galaxies are made of gas and dust . which statement does lola need to correct, and why?

Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

What class of levers is shown in this image?