Answer:
they could use other forms of energy, such as solar or wind.
Explanation:
Answer: The are found in colder seas because that is where its prey lives and they have a high metabolism.
A. they arose out of Africa less than 200,00 years ago
<span> There are two main methods of determining the salt content of water: Total Dissolved Salts (or Solids) and Electrical Conductivity. Total Dissolved Salts (TDS) is </span>measured<span> by evaporating a known volume of water to dryness, then weighing the solid residue remaining.</span>
