Which of the following describes a reason for making a prediction when doing a controlled experiment? a. to identify a useful and reliable source of scientific information b. to prove that a hypothesis is true before it is tested in an experiment c. to anticipate the observations or measurements that will be made d. to learn what is already known about a specific research question

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes

How do the sperm cells get from the stigma to the ovules?

Which of the following would you not find in a bacterial cell? dna cell membrane golgi apparatus ribosomes