Because enzymes connect to their substrate through a lock-and-key system, where the shape of the substrate and the enzyme has to fit like puzzle pieces. Then only the enzymatic reaction can occur.
It would be b. 1 TT: 2Tt: 1 tt. Because crossing two heterozygous parents means the genotypes for them are Tt and Tt. Which means that there is only one way to get TT or tt and 2 ways to get Tt
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Answer:
The gravitional pull of the Earth
Explanation:
Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is. Since the earth has more it will cuase you to be, almost attracted by it.
Also, Gravity is inversely proportional to the square of the distance that separates the two bodies. Hence gravity will decrease as one will go higher in altitude, and hence away from the center of mass.
But since your falling from a plane, or some other type of aircraft, your moving closer to the center of mass, hence your gravitational pull get stronger as you falling closer-and-closer to the ground.
