In Mrs. Frizzle’s science classroom, she sets up a beaker as in the illustration shown; there is a bag filled with a glucose solution (glucose and water) in a beaker. The beaker also has a glucose solution, but at a different concentration. The bag is permeable to water but not glucose. One student, Ricky, is working on the problem and draws his arrow showing the movement of water into the bag.

Another student, Cindy, disagrees with him. Cindy says the arrow should be showing the movement of water out of the bag.

Which of the two students is correct?

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact forest area cleared to construct an airport increase in oxygen level vegetation cleared to construct an oil mine increase in pollution impact of human activities human activity impact forest area cleared to construct an airport increase in sound pollution vegetation cleared to construct a power plant contamination of water impact of human activities human activity impact beehives cleared from urban areas increase in vegetation dams constructed on a river increase in fish population impact of human activities human activity impact beehives cleared from urban areas increase in bird population dams constructed on a river better quality of water

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred