<h3>Hi!</h3>
<h3>The correct options would be:</h3>
1, 3 and 4.
In an alpha decay, the atom's mass number is reduced by 4, and the atomic number is reduced by two following the emission of an alpha particle (2 protons and 2 neutrons).
In gamma decay, the atom releases energy spontaneously to stabilize itself, and this energy is released in the form of photons.
<h3>Hope this helps!</h3>
0.65×100=65g
100 is the mass of one mole of caco3 in grams.
The individual is most likely sifting through the debris which is found at the crime scene.
<h3>What is Debris?</h3>
This is defined as the scattered remains of something which has been broken down as a result of incidents such as an explosion.
The wire mesh is used as it helps to remove long fibers present at the crime scene which is taken for investigation.
Read more about Crime scene here brainly.com/question/10702774