<span>Mutagen is an agent that causes DNA mutations. UVA radiation penetrates
deep into the skin and acts as a mutagen. UV light is the most common source of
radiation that affects DNA, but it is a weak radiation and it penetrates only
the surface cells of your skin.</span>
Answer:
The asteroid belt lies between 2.2 and 3.2 astronomical units (AU) from our sun. One AU is the distance between the Earth and sun. So the width of the asteroid belt is roughly 1 AU, or 92 million miles (150 million km).
Explanation:
1 liter evaporates in 5 hours. just set up a proportion (:
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1. Naked Seeds, Gymnosperm means 'naked seed' and these were the earliest trees to evolve. They do not produce flowers and have seeds which are directly exposed to the air for wind pollination. Pine cones are one example. For ease you might think of the gymnosperms as conifers, such as yew and Scots pine.