The sub field of biological anthropology that uses fossils record to examine the anatomy and behavior of human relatives in the past is called PALEOANTHROPOLOGY.
It involves the study of primate and human evolution and its main evidence is the fossils of the ancestors.
Answer:
The correct answer will be-Orbicularis oris muscle
Explanation:
The muscle which is present in the mouth is known as the oribicularis oris which consists of various muscular fibres in a different direction.
The oris muscle is derived from the other facial muscles inserted into the lips and join with the lips controlling the movement of the lips.
The muscle controls the movement by pulling down the corners of the mouth and the lips along with other muscles like the mentalis, the triangularis and the risorius.
Thus, Orbicularis oris muscle is the correct answer.
<em>Answer:</em>
Thrust and Lift.
<em>Method:</em>
There are 4 forces acting upon a plane while it is moving. Drag (The air friction while it's in the air), Lift (Generated by the wings (The upward force), Weight (How heavy the plane is), and finally, Thrust (Generated by the engines which moves the plane/wings through the air generating lift). If there is enough air going over the wing at a high enough speed, and Thrust, and Lift overcome the other two forces keeping the plane on the ground, it can fly. The air pressure under the wing is higher than over the wing - If you have ever ran you hand under the water keeping it flat, you may notice it going up, those are basically the same forces, but under water.
How does the pressure under the wing affect the lift?
The difference of air pressure over the wing (which is less), which also means less force bringing the plane down. The air pressure under the wing is higher, putting pressure on the wing moving it up. A wing is designed to make the air travel a longer distance over the wing than under the wing creating the air pressure. The engines just enforce that process.
Answer: The correct answer is A) A+C=G+T
According to Watson and Crick base pairing-
In a double stranded DNA molecule, Adenine pairs with Thymine and Guanine pairs with Cytosine. This means that number of Adenine in one strand is equal to the number of thymine in the complementary DNA strand. Similarly, the number of Cytosine in one strand is equal to the number of Guanine in the complementary strand.
Thus, the total number of Adenine and Cytosine in one strand becomes equal to the total number of Guanine and Thymine in the complementary strand.
This can be mathematically written as- A+C = G+T
Thus, option A) is the right answer.
There could be many answers to this question, but a possible one is embryo!!
