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

The diagram below represents a marine food web and a process that can harm the human population. each circle represents an organism and the smaller dots inside them represent a toxic substance. what is being represented and how does it harm the population? the diagram represents biological half-life, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents biomagnification, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents the process by which different organisms prey upon each other; this can impact the human population by reducing the number of organisms that do not contain the toxin. the diagram represents the way that toxins are metabolized by living organisms, with those at greater trophic levels able to metabolize more efficiently than those at lower levels. this means that those at higher tropic levels are safer for humans to consume compared to the organisms at lower trophic levels.

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Which organelle breaks down sugar molecules that supply energy to the cell ?