Answer:
<em>The correct option is C) H2SO4</em>
Explanation:
A molecule can be described as a substance which is made up of the same kind of atoms or element. For example, O₂, N₂ etc. Hence, option A is an example of an element.
A compound can be described as a substance which is made from different atoms or elements. For example, H2SO4 is made up of the elements hydrogen, oxygen, sulphur. Hence, option C represents an example of a compound.
Answer:
The mass number (symbol A, from the German word Atomgewicht [atomic weight]),[1] also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It is approximately equal to the atomic (also known as isotopic) mass of the atom expressed in atomic mass units. Since protons and neutrons are both baryons, the mass number A is identical with the baryon number B as of the nucleus as of the whole atom or ion. The mass number is different for each different isotope of a chemical element. Hence, the difference between the mass number and the atomic number Z gives the number of neutrons (N) in a given nucleus: N = A − Z.[2]
The mass number is written either after the element name or as a superscript to the left of an element's symbol. For example, the most common isotope of carbon is carbon-12, or 12
C
, which has 6 protons and 6 neutrons. The full isotope symbol would also have the atomic number (Z) as a subscript to the left of the element symbol directly below the mass number: 12
6C
.[3]
Complex carbohydrates require enzymes such as Salivary amylase, Pancreatic amylase, and Maltose for digestion.
Answer-E,A,H,C, G, D,F,B
Explanation 1. Community- The interacting populations within a geographic area
2. Biocide-a. A substance that is capable of destroying living organisms
3.Habitat- h. The environmental situation in which an organism is generally found
4. Biosphere- The portion of the earth's surface, water, and air that can support life
5. Ecosystem- g. A system formed by the interactions of communities of organisms with each other and the environment
6.Cell- d. The simplest structure that exhibits all of the characteristics of life
7. Ecological niche- f. The role or position that a species occupies in a community
8.Biome- b. All the communities and ecosystems found under a given set of climatic conditions