Answer:
A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail.
Explanation:
 a celestial object consisting of a nucleus of ice and dust and, when near the sun, a ‘tail’ of gas and dust particles pointing away from the sun.
True because <span>the water will diffuse through the membrane until there is an equal concentration of solute and water on both sides.</span>
Saliva contains an enzyme that breaks down STARCH.
The digestion process usually starts in the mouth. The saliva contain an enzyme called ptyalin, which act on the starch in the eaten food and break it down to simple sugars. This enzyme is secreted by the salivary gland and it helps in the pre digestion of starches.
C. Observations are made in a living mouse
An in vivo experiment consists on conducting the study in a whole living organism, in this case, a mouse
Answer: electron
Explanation:
An atom is made up of subatomic particles: proton, neutron and electron.
Proton and neutrons are found in the nucleus of atoms while electron is found outside the nucleus.
Thus,the only particle not found in the nucleus is electron.
