Below are a list of characteristics. In your response, create three bulleted headers (Mechanical, Both, Electromagnetic). Then, put the NUMBER of the characteristic under the correct header. Characteristics:

1.Amplitude
2.Requires a medium
3.Can travel through a vacuum
4.Compressions/rarefactions
5.light
6.transfers energy
7.Wavelength
8.sound
9.Frequency
10.Vibrations in a magnetic field

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

i think the answer is b.