scientists can understand and learn about evolution by studying fossils. However, whole and intact specimens are hard to come by. To study these specimens, scientists use technologies such as

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

bal is blood alcohol level. bac will normally be higher in a person with more body fat. so the answer to your question would be, as body fat decreases, the increasing rate of bal decreases.