Well Trilobites first appeared about 521 MILLION years ago, which is around the Early Cambrian Period. Trilobites were early anthropods that lived in the Earth's sea. They had hard-shelled bodies, and their bodies were composed of multiple body segments and jointed legs. Trilobites are made up of 3 main body parts, the Cephalon (the head), a segmented Thorax, and a Pygidium (the tail). Hope I helped!
Answer:
<em>Here we see that there are three ways for an offspring to exhibit a dominant trait and one way for recessive. This means that there is a 75% probability that an offspring will have the dominant trait and a 25% probability that an offspring will have a recessive trait.</em>
The enzyme’s active site binds to the substrate. Since enzymes are proteins, this site is composed of a unique combination of amino acid residues (side chains or R groups). Each amino acid residue can be large or small; weakly acidic or basic; hydrophilic or hydrophobic; and positively-charged, negatively-charged, or neutral. The positions, sequences, structures, and properties of these residues create a very specific chemical environment within the active site. A specific chemical substrate matches this site like a jigsaw puzzle piece and makes the enzyme specific to its substrate.
the correct answer is option <u>A. effluent from </u><u>factories</u><u>. </u><u> </u> (◍•ᴗ•◍)
20% because A-T and C-G=100
A-T=50 and you said C is (30) and if we plus 20 we get 50 so we combine all four we get