B. malignant is the correct answer
The right answer is freed the hands for other uses.
bipedality is also more economic than tetrapedality, but it is not as fast and does not offer a high jumping skills.
The standing position has an advantage in reproduction because it has become attractive to females and more or less successful imitation in males, depending on their abilities, but bipedalism is a disadvantage in childbirth.
Answer:
Option C, The particles of air move freely, colliding with each other and the sides of the balloon
Explanation:
The air molecules exert force on the inner surface of the balloon due to which the material of the balloon stretches and it increases in size. If air is blown in large extent, it will exert more force on the balloon material thereby extending it to a larger extent but when air is blown in a smaller amount, the size of the balloon increases by a smaller extent.
Hence, option C is correct
Answer:
Hydrogen Bonds
Explanation:
The arrangement of phospholipid bilayer of plasma membrane is such that ; the polar phospholipid heads point outwards into the watery external environments. This Polar environment is Hydrophilic or water loving, while the water- hating hydrophobic tail region pointed inwards away from the watery medium.
This gives the usual bilayer shape to the plasma membrane,with the tail facing one another and heads outward.
The hydrogen bond is formed as inter molecular forces between the hydrogen atom (positive side)of water molecule and oxygen atom (negative side)of the polar molecules e.g glucose, to form an idea dipole -dipole force interactions,
Polar Compounds, glucose, urea dissolved easily in hyrophilic watery environment to from Hydrogen bonds with water
<u>The correct answer is Hydrogen bond a dipole dipole force</u>
