Answer:
They are classified into three orders: frogs and toads, salamanders and newts, and caecilians.
T rex because he didnt have the arms so his teeth were curved back to keep his prey from escaping.
Answer;
Allergic contact dermatitis.
The reaction may be classified as allergic contact dermatitis.
Explanation;
-Contact dermatitis is a red, itchy rash caused by direct contact with a substance or an allergic reaction to it.
-Allergic contact dermatitis is a manifestation of an allergic response that is caused by contact with a foreign substance.
-This causes the body to release inflammatory chemicals that can make the skin feel irritated and itchy.
Answer:
All of the above.
Explanation:
Regulation of the expression of genes refers to different processes tge cells use to increase or decrease the production of some gene content. It involve Turing gene on and off so as to ensure that appropriate genes are expressed at the right times. This allow organism to respond to changes in their environment.
Genes are typically hundreds or thousands of base pairs in length because they code for proteins made of hundreds or thousands of amino acids. Most genes contain the information needed to make functional molecules called proteins.