1.I was invented in the 1960s. 2.I am well known for the light I produce.
3.My light is monochromatic and coherent.
4.It has high intensity and low divergence.
5.Because of these properties, It is used in cutters, DVD player and surgery.
So who am I?

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

What is the importantence of the carbon and nitretan cycles in the environment

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different