Bulid and repair tissues, Make enzymes and hormones, and Help prevent infection. Hope this helps!
Answer:
only helium makes balloons go up so the answer is helium
Explanation:
Answer:
Due to presence at early days of the planet.
Explanation:
We only find the remains of single celled organisms in the oldest fossils because the single celled organisms are the organisms that were present in the early days of this planet. These single celled microbes were present about 3.7 billion years ago while on the other hand, the oldest rocks are only a little older i. e. 3.8 billion years so these single celled organisms are considered as oldest fossils on this planet.
<h2>The correct answer is <u>it will decrease.</u></h2>
<span>Natural selection is what allows a population to adapt because the animals that adapt are the ones that mate and pass along their genes. Without natural selection, evolution or adaptation would not be able to occur.</span>
