What is the average “lifespan” of the following cells: Red blood cell:
Brain cell:
Skin cell:
Heart muscle cell:
Fat cell:

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

What is the importance of interlocking the fingers and rubbing while washing hands? the palms are the dirtiest parts of the hands. the spaces between the fingers get washed. the backs of the hands get washed. the fingernails are the dirtiest parts of the hands