How many pounds equal 2 and a half?

Which of amoeba and paramecium and euglena can survive the most adverse conditions? What two strands of DNA join together to form? Ice is a solid but why does it floats on water? What is a collective label for t and b immune cells? Does the earth release heat back into the atmosphere at night? What is the most important reason the city of Boston chose to fill in much of their swampy land and coastal areas? Which blood contains more oxygen? Is electricity produced in a wall socket? Are elements are capable of forming compounds? How long does it take light to travel in 4 feet? What is a common organism that lives in an environment? What does a chemical bond represent in a molecule? How many seminiferous tubules are found in the lobules? Is the uranus known as the father of sky? What is the biggest comet in our solar system? What element has the electron distribution of 1s22s22p63s23p64s23d104p65s24d105p66s1? What human factors that are there that cause illness accidents or disasters? What is emission of energy? What is the meaning of refusal laboratory compaction? In what structure does Bacterial DNA resemble human DNA?