Have a few questions all science plz

tsunamis, liquefaction, shaking and aftershocks are damage caused by
a.
hurricanes
c.
flooding
b.
tornados
d.
earthquakes

a nuclear reaction in which two atomic nuclei are combined to produce a single large nucleus and energy is released by the reaction is known as:
a.
nuclear meltdown
c.
nuclear fusion
b.
nuclear fission
d.
nuclear blending

any time stress causes rocks to change, is the result.
a.
tension
c.
compression
b.
folding
d.
deformation

Answer 1: -

d. Earthquakes  

Explanation: -

Earthquake is shaking of the surface of the earth with sudden release of energy that can be stored in the earth to produce further bigger disturbances. Tsunamis are nothing but strong massive earthquakes that take place below the sea level that cause heavy destruction. Aftershocks are smaller earthquakes that occur after a main shock i.e. largest earthquake.

Pressures applied during the earthquakes generally force underground water and liquefied sand to come up to the surface. Hurricane and tornado are types of storm and flooding is related to heavy rainfall.  Hurricanes, tornado and flooding don’t cause tsunamis, liquefaction, shaking and aftershocks. On the basis of above explanation it is earthquake is the correct option.

-

d. deformation

Explanation:-

Changes in temperature or moisture, pressure, type of rocks, buildup of sediment, gravitational force are some of the factors that cause deformation of rocks. When any type of stress is applied to the rock, it causes the rocks to deform. It changes either its shape or volume or both. The size or shape of the rock is changed which is termed as deformation.  There are three types of deformation elastic, ductile and brittle deformation. A tectonic pressure in the rocks causes folds whereas tension forces rocks to pull apart and compression, totally opposite to tension forces rocks to collide and move together. On the basis of above explanation, deformation is the correct option.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: