Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below. Overlapping red and blue balls in the center with a circular fuzzy green cloud outside them.

What experimental evidence led to the development of this atomic model from the one before it?

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

the tricuspid valve is present between right atrium and right ventricle

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.