Sand dunes are formed from wind movement. There needs to be a large amount of loose sand in an area with hardly any vegetation, enough wind to move grains of sand and some kind of obstacle to make the blowing sand lose its momentum and settle in a new place.
Answer:
The correct answer is b. an amino acid
Explanation:
A tRNA is called adaptor RNA which have cloverleaf-like secondary structures. These structures contain stems and loops which make up the acceptor arm, anticodon stem and loop, D- stem and loop, and T- stem and loop.
Acceptor arm contains seven base pairs and four single stranded nucleotide which include conserved CCA sequence. The function of acceptor arm is attach amino acids require for protein synthesis.
The anticodon loop gives information to acceptor to attach a specific amino acid according to the sequence present in mRNA. The first amino acid which attaches to acceptor arm is methionine.
Thus, the correct answer is b. an amino acid.
Blood Provides the Body's<span> Cells with Oxygen and Removes Carbon Dioxide. Blood absorbs oxygen from air in the lungs. It </span>transports<span> the oxygen to cells </span>throughout the body<span>, and it removes waste carbon dioxide from the cells</span>
Answer:
Yes
Explanation:
An energy pyramid shows the amount of available at each feeding level in an ecosystem. This energy pyramid shows the amount of energy available at each tropic level showing the food energy progression. The pyramids contain energy starting with the producers (plants) at the bottom to primary consumers, tertiary consumers and so on up to the top of the food chain. The most common units are grams per square meter per year or calories per square meter per year.
