bearnybear

Hi. Each human cell contains the gene for how many traits? I know that a cell has chromosomes, on which there are thousands and thousands of genes. Does this mean thousands and thousands of traits can be inherited by the genes in every cell? Merged post follows: Consecutive posts mergedNever mind. I realized it can be thousands, or more, traits! Sorry, I forgot I had to merge my posts.

I'm think that the sun may evaporate some water, which soon precipitates and goes into lakes and oceans, giving them more power to push generators for energy. Also, maybe the sun can melt some ice in certain areas. Then, there will be more water, which adds to forcing generators to turn. I think that's not too bad.

The heat goes from the source: the pizza, to the sink: my hands! Thanks!

"How can hydroelectric energy be considered the result of the sun's and gravitational energy?" With gravity, water can fall and turn generators to make electricity. But what does the sun have to do with making the energy? Wouldn't it just evaporate some of the water?

Since the water loses energy, then the answer must be.. choice A! Thanks so much. I totally forget that heat goes from high concentration to low concentration!!!

An ice cube is placed in a glass of water at room temperature. Which heat exchange occurs between the ice cube and the water within the first minute? A. The ice cube gains heat, the water loses heat. B. The ice cube loses heat, the water gains heat. C. Both the ice cube and the water lose heat. D. Both the ice cube and the water gain heat. Wouldn't the ice cube start melting since room temperature is higher than its freezing point? That means it would need to gain energy to do so. That rules out choices B and C. But would the water in the cup get colder because of the ice cube or warmer because the ice cube is?

I'm doing an experiment with aluminum wires, and when I put them in saltwater, they starting growing these orangish blobs. Then, in regular water, they looked darker in some parts. In air, obviously nothing happened. Can anyone explain what the heck happened with the wires in saltwater because I'm clueless right now? :confused::confused::confused::confused: Merged post follows: Consecutive posts mergedP.S. Could the salt have clumped together in the water to create those orange blobs? P.P.S. I used sea salt to make the saltwater solution, by the way.

I'm doing an experiment with aluminum wires, and when I put them in saltwater, they starting growing these orangish blobs. Then, in regular water, they looked darker in some parts. In air, obviously nothing happened. Can anyone explain what the heck happened with the wires in saltwater because I'm clueless right now? :confused::confused: