Answer:
Atmosphere layers. Earth's atmosphere is divided into five main layers: the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere. The atmosphere thins out in each higher layer until the gases dissipate in space.
Explanation:
The atmosphere has 4 layers: the troposphere that we live in near the surface of the earth; the stratosphere that houses the ozone layer; the mesosphere, a colder and lower density layer with about 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.
Answer:
option B
Explanation:
The correct answer is option B.
The bond formed by donating electron is called Ionic bond.Ex LiF,NaCl
Bond formed by mutual sharing of electron between two atoms is know as Covalent bond. Ex CO, IBr
hydrogen bond is the bond formed between the hydrogen and highly electro negative compound. Ex: H₂O, NH₃
Polar bond is a covalent bond which is between two atoms where the electrons are unequally distributed.
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base.
This backbone carries four types of molecules called bases and it is the sequence of these four bases that encodes information. The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code.
It is the DNA that is inherited from parents to the off springs. It contains all the information of an individual on it in the form of genes
1 batería cell is the answer .
