Which are uses of lasers? Check all that apply. ✓ scanning barcodes
x transmitting telephone and Internet signals
X examining internal body parts
✓ cutting through metals, ceramics, plastics, and cloth
✓ correcting vision problems

Answers: A, D, E

what school and grade?

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).