Most likely the students are using a crude measurement of time, like a stopwatch. They would get the best results with a scientific apparatus that uses a computer and optical sensors. Even recording their dropped objects with a video camera and analyzing the video would give more consistent results. Results will also vary greatly if different people are taking the time measures instead of one person making all measurements.
Answer:
When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. It can breed and spread quickly, taking over an area. Invasive species can change the food web in an ecosystem by destroying or replacing native food sources.
Explanation:
I majored in Biology
Answer:
Water- from water comes from a variety of sources, including many of the same sources as tap water.
Leather- from rawhide and skins. The most common raw material is cattle hide.
plastic- from cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process
Explanation:
<3
AlohaS4
Answer & Explanation:
( Rh Factor ) represents the presence of the Rhesus protein in the blood.
( Rh+ ) blood contains the rhesus protein.
( Rh- ) blood does not contain the rhesus protein.
( Type O ) blood is the universal donor.
( Type AB ) blood is the universal recipient.
( Rh+ ) blood can receive Rh+ or Rh- blood.
( Rh- ) blood can receive Rh- blood.
Hope you found this helpful! <3
<em>~Aloha</em>
<em />
<em>Btw: This contains the full Edge question. So, if you're using Edge, just click "done" for each part of the question and answer it. :)</em>
