Even though water is a liquid, some insects are able to stand on its surface due to water's high surface tension. unbalanced forces pull the water molecules inward which causes the surface of the liquid to have properties similar to that of a stretched elastic membrane. what is responsible for the unbalanced forces in water?

a. ionic bonds
b. a neutral ph
c. hydrogen bonds

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion