HURRY!! WILL GIVE How did astronomers use technology to identify characteristics of the Crab nebula? technology that detects ultraviolet light found hydrogen in the nebula
technology that detects radio waves identified a pulsar at the center of the nebula
technology that detects microwaves revealed the behavior of electrons in the nebula
technology that detects gamma rays measured the distance of the nebula from Earth

Which structure in the cardiovascular system connect arteries to veins?

Using the gas pedal analogy explain the impact on the cell cycle of one mutated tumor suppressor gene allele versus two mutated tumor suppressor alleles

Cancer cells spread to other parts of the body by entering the bloodstream. which of the following organs could prevent a cancer cell in the bloodstream from spreading, and why? a. the spleen, because it releases lymphocytes into the blood b. the peyer's patches, because they release lymphocytes into the blood c. the lymph nodes, because they release lymph into the blood d. the thymus, because it releases lymph into the blood