The answer to the question stated above is letter b. <span> <span>a meteor or asteroid colliding with Earth
</span></span> <span>The mass extinction at the end of the Mesozoic Era was caused by </span>a meteor or asteroid colliding with Earth. This was said to happen about 65 million years ago.
Answer:
An element is. a parcel where it is made up of only one kind of particle called atom is known as element.
eg. oxygen
hydrogen
gold
silver
carbon
Explanation:
hope it helps you
Mitochondria are found in plant cells...? I'm not too sure.
Answer:
D) the sum of all physical properties of a substance
