Answer:
Evolution is a scientific theory used by biologists. It explains how living things change over a long time, and how they have come to be the way they are. ... It is known that living things have changed over time, because their remains can be seen in the rocks. These remains are called 'fossils'.
An atom will usually form either an ionic bond or covalent bond with another atom but not both.
Ionic bonds are the kind of bonds that result when one atom transfers or gives up electrons and another atom receives them and adds them to its own energy shells.
An example is sodium metal and chlorine gas. Sodium gives up two of its electrons and Chlorine receives them and the two elements form an ionic bond to create sodium chloride, a new compound.
Covalent bonds are the kind of bonds formed when two atoms decide to share electrons. No atom gives up any electrons and neither does the other atom receive any. An example is water. An oxygen atom shares two of its electrons with two hydrogen atoms to form a molecule of water (H2O).
Answer:
A
Explanation:
hygiene is done by oneself
Answer:
I think it is d of not that then c
Answer:
Hi
In the atmosphere, cloud drops form on aerosols called condensation nuclei. The formation rate of the cloud droplets is determined by the number of cores. In general, aerosols can be classified, according to their affinity with water, into hygroscopic, neutral and hydrophobic. Nucleation on a neutral aerosol needs almost the same supersaturation as homogeneous nucleation; on a hydrophobic aerosol, nucleation is more difficult and more supersaturation is required. On the hygroscopic particles, which are soluble and have an affinity with water, the supersaturation that is needed for the formation of the droplets may be less than for homogeneous nucleation.
Explanation:
