Would you say cells, bacteria, algae, plants, are the basic untits of life?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?