Answer:
These are the three that exceed EWG Health Guidelines
Chromium
Haloacetic acids
Total trihalomethanes
Explanation:
https://www.ewg.org/tapwater/system.php?pws=SD4600356
p = m / V (Density = Mass / Volume)
p = m / (w * l * h) (Density = Mass / [Width * length * height]) (V = w * l * h)
p = 120 / (5 * 4 * 3) (Mass = 120g [Given] w=5 l=4 h=3 [Given])
p = 120 / 60
p = 2 g/cm^3
Answer is B (2)
Answer:
Homologous structures can be described structures which originate in different organisms from a common ancestor and may or may not have the same functions.
Zeuglodons can be described as ancient whales and Orca is a common whale today known as the killer whale.
<u><em>Scientific studies show that Zeuglodans and Orca have many structures in common such as:</em></u>
- <u><em>Having teeth with two roots</em></u>
- <u><em>The presence of nostrils</em></u>
- <u><em>Pelvis and internal femur bones</em></u>
Ionic compounds are formed from strong electrostatic interactions between ions, which result in higher melting points and electrical conductivity compared to covalent compounds. Covalent compounds have bonds where electrons are shared between atoms.