Why is a virus considered non-living

a. a virus does not have a nucleus

b. a virus does not contain genetic material

c. a virus is to small to be considered a cell

d. a virus cannot reproduce itself without a host cell

The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give