You have an elodea sprig in a test tube, and you watch it for several days. At what time of day will the oxygen level in the tube be the lowest?.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

In her article "why should i vote? " stephanie goggin crafts a well-organized and coherent argument. she states that every person of voting age who is registered should vote. she also argues that if you are not registered to vote, you should be. in conclusion, goggin's argument is laid out in a thoughtful and thorough way that is convincing to readers. which element is missing from this evaluation?

Earth takes in thermal energy from the sun in a process called . sunlight strikes earth’s surface at different angles. this angle is called the angle of . btw its