Which of the following is not a part of a wave? question 2 options: a: frequency b: refraction c: wavelength d: amplitude (whoever answers correctly first gets brainiest! ) ~kayla

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

What is the relationship between the direction of motion of the balloon and the wind currents

In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic