Two students make a model of a tree has a want to build. The scale is 1:44. In the scale model, the treehouse has to windows. How many windows are the real house

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?