SF2 and CH4 have similar, but not identical bond angles. Explain this observation and explain why they are slightly different.

Which of the following mining methods disrupts the sea floor?

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange