Answer the questions below in complete sentences. • In what layer does plasticity and convection occur?
• Which layer is thinnest under the oceans and thickest in the mountains?
• Which layer is made of solid iron?
• Which layer is the hottest? The coolest?

The graph shows the solubility of several different salts in water, across a range of temperatures. according to the graph, which salt can dissolve at a concentration of about 60 g/100 cm3 of water at 40 degrees celsius?

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what