Answer:Today is Friday,Jan 22, 2020
Explanation:
<span>As humans cause more carbon dioxide to be released into the Earth's atmosphere, it causes the oceans to become much more acidified which in turn begins to damage the precious coral reefs. Roughly one quarter of all the life in the ocean is dependent on coral reefs for food and shelter.</span>
Semilunar valve will be open
A metamorphic rock is a type of rock which has been changed by extreme heat and pressure. so must be option D