Organisms that have catalase What are you looking for in your observations when you are looking for evidence of a reaction?
Does the plant tissue that was tested contain catalase?
Does the animal tissue that was tested contain catalase?

Which could be a pathway of food through an ecosystem

Are the layers of rock above and below the coal older or younger?

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?