High-flying birds are able to obtain enough oxygen even when the air is very thin because

Which source of energy is normally used for short bursts of activity?

The genes that code hemoglobin are found on

Which phrase describes the role of the mitochondria? a. where proteins are manufactured b. where genetic material is housed c. where cells control water content d. the powerhouse of the cell

The cluster of developing cells from conception until birth is called what?

Which unit of geologic time is the oldest? Cenozoic Mesozoic Ordovician Precambrian

What makes agar ideal for cultivation of microbes?

Describe jean Lamarck's idea of evolution

Is it true Without the skeletal system, the body could not fight off infection.

Which statement directly describes the cells produced by meiosis the genetic material of the new cell is diploid the new cells are exact copies of the original cell the genetic material of the original cell is divided among the new cells the new

Which of the following statements is true A you get you acquired traits all your life but once you acquire them they never change B you are born when inherited traits but they change over your lifetime as you learn new things C your inherited traits