Oxygen-16 and Carbon-12 are stableisotopes of elements O and C respectively. Hence, they do not have half-lives. But Carbon-14 andUranium-238 are radioactive isotopes. Among them Carbon-14 has relatively short half-life as about 5730 years while Uranium-238 has a long half-life as about 4.5 billion years.
Answer is. uranium-238
According to a source the answer is <span><u>Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.</u>
These cyanobacteria species were the first ones to "produce" oxygen as a by-product of the photosynthetic mechanisms which enables organisms to make their own food. </span>
<em>There are two types of vascular tissues witch are Xylem and Phloem</em>.
<em>Xylem is for water transport.</em>
<em>Phloem is for glucose.</em>
<em>Here is an extra just for you! ;)</em>
<em>Parenchyma for lateral transport of both. </em>
Answer:
please give me brainlist and follow
Explanation:
The Earth also moves around the sun. ... So the Earth rotates around its axis as it revolves around the sun. It takes the Earth 365 days, or one year, to complete a revolution. Leftover momentum from when planets were forming makes the Earth, and all planets in the solar system, rotate and revolve.
Answer:
Protein modification and storage
