Answer:
True
Explanation:
Each replicated chromosome pairs with its corresponding homologous chromosome forming a tetrad. During tetrad formation, alleles can be exchanged between chromatids, a process called crossing-over.
If, and only if, makes it bi conditional.<span />
Answer: 2
Explanation: The balanced equation would be: Na2O + H2O -> 2NaOH, meaning that the product (sodium hydroxide) has 2 moles of oxygen atoms.
Answer:
<em>3) hydrosphere</em>
Explanation:
<em>About 71 percent of the Earth's surface is water </em>