Jamal wants to know how fast his skateboard can roll down the ramp in front of his school. so, jamal places the back of the
skateboard even with the top of the ramp and times how long it takes before the front of the skateboard reaches the end of the
ramp. after he records the time, he performs this procedure again four more times and calculates the average time.
during his experiment, jamal demonstrates
oa. renovation
ob. replication
oc. repetition
od. regeneration

Describe surface tension in a group of bonded water molecules

Which of the following observations darwin shape his concept of descent with modification? a) species diversity declines farther from the equator.b) fewer species live on islands than on the nearest continents.c) birds can be found on islands located farther from the mainland than the birdsê¹ maximum nonstop flightdistance.d) south american temperate plants are more similar to the tropical plants of south america than to thetemperate plants of europe.e) earthquakes reshape life by causing mass extinctions.

Describe two farming practices that can reduce erosion