Pour the water into the bowl. mix in the dirt. experiment: water purification
place the...
Biology, 27.09.2019 02:00, Emptypockets451
Pour the water into the bowl. mix in the dirt. experiment: water purification
place the small glass in the center of the bowl. the lip of the glass should stand taller than the dirt and water mixture, but shorter than the sides of the bowl.
find a sunny spot outside. place the bowl in direct sunlight.
place the plastic wrap over the bowl. put the rock in the center of the plastic wrap, directly over the cup. gently push down on the rock until the sides of the plastic wrap slope at about a 45° angle. secure the loose sides of the plastic wrap to the outside of the bowl.
leave the bowl in the sun for three or four hours.
remove the plastic wrap. look in the cup and in the bowl. record your observations.
respond to the questions below.
questions
answer the questions in the essay box below.
is the water in the cup dirty? why or why not?
what happened to the water in the bowl?
this project simulates a real world process. what does the plastic wrap represent? what does the water in the cup represent?
which two parts of the water cycle are at work?
Answers: 3
Biology, 22.06.2019 04:30, dondre54
African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.
Answers: 2
Biology, 22.06.2019 13:00, joshvslogic341
Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now
Answers: 1
Mathematics, 15.10.2019 01:30
Mathematics, 15.10.2019 01:30
Mathematics, 15.10.2019 01:30
SAT, 15.10.2019 01:30
History, 15.10.2019 01:30