A student observed pond water through a field microscope. He saw several organisms moving around in the water. His teacher explained that bacteria are too small to be seen with the limited magnification of the field microscope. The unicellular organisms the student observed were most likely from the kingdom -

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.