Answer:
Newton's Third Law of Motion
Explanation:
According to the given condition, the rocket is launched into space and it exhausts gases in the opposite direction of its movement. This condition is an example of Newton's Third Law of Motion. According to that, an action has a reaction but in an opposite direction. More precisely, if an object exerts a force on the other object, the second object will also exert an equal forceback on the first object. This condition satisfies what is mentioned in the statement and thus, it is an example of Newton's Third Law of Motion. Mathematically, it can be written as

I have attached a figure for better understanding.
Answer:
A. More hydrogen ions inside the membrane than outside it
Explanation:
During electron transfer from water molecule to PS II and then through electron transport chain to the PS I pumps the hydrogen ions inside the thylakoid lumen. ATP synthesis is driven by energy of proton concentration gradient that moves the hydrogen ions (protons) from lumen of thylakoid membrane towards the stroma. Hence, ATP synthesis requires presence of more hydrogen ions inside the membrane.
Answer:
All the puppies have black hair because albino alleles are found in two different genes.
If we let the letters A and B represent the two different pigmentation genes, the one of the dogs is AAbb, and the other is aaBB.
Their offspring are AaBb and so there are not albinos because they have one dominant copy of each gene.
Answer: it would be b. a biologist studying insects.
Explanation:
Percentage w/v means that weight of solute present in 100 ml of a solution. Hence, 15% w/v means that 15 gram of solute per 100 ml of solution.
Hence, for 2 L (or 2000 mL) preparation the amount of mass will be calculated as follows.

= 300 g
Thus, we can conclude that weight of Tris-HCL required is 300 g.