Answer:
Microscope
Explanation:
The discovery of cells arose from the development of the microscope: Robert Hooke first used the term “cell” following his observations of a piece of cork with a simple light microscope in 1665
Answer:
C. Only a fraction of energy is passed through each level, so there is less available to upper-level consumers. The energy flow is unbalanced and tends to move toward the lower levels
Explanation:
About 50% of the energy (possibly as much as 90%) in food is lost at each trophic level when an organism is eaten, so it is less efficient to be a higher order consumer than a primary consumer.
False, rock layers are the oldest at the bottom
hope this helps (:
Answer: I think this may be the answer....
Explanation:
The islets of Langerhans contain alpha cells which secrete glucagon and beta cells which secrete insulin. Insulin and glucagon are hormones that work to regulate the level of sugar (glucose) in the body to keep it within a healthy range.
