Students will use a stream table to investigate the ability of water to transport materials, as shown in the diagram. Students' Question: How does the slope of a stream affect the transportation of pebbles?
Plan:
1. Place pebbles at the top of a stream table.
2. Pour water into the stream table and observe the pebbles.
3. Repeat 3 times.
4. Change the height of the brick under the table.
5. Repeat this procedure at various heights.
Select the two variables students must keep constant throughout the entire investigation.
O A amount of water
Ic number of pebbles placed at the top of the stream table
D. number of pebbles that flow to the bottom of the stream
table
B. angle of the stream table

Ineed a chemical reaction takes place in which erlergy is released. arrange the reaction's characteristics in order from start to finis lower energy of reactants higher energy of products higher energy of reactants transition state sd lower energy of products

Will mark brainliest if correct/available! which of the following statements is true? all plants need flowers to sexually reproduce. sexually reproduced offspring are identical to their parents. fertilization always occurs inside the female's body. a body cell has twice the number of chromosomes as an egg cell.

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.