Nucleotides are being named or classified by their bases. They are adenine, cytosine, guanine, thymine and uracil. Nucleotides are organic molecules that serve as the monomers, or subunits, of nucleic acids like DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Answer:
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Explanation:
this is dumb no really dumb
Mendeleev organized the chemical elements based on their properties.
Mendeleev put elements in order in the periodic table according to their physical and chemical properties. He noticed that properties of elements were related to their atomic mass in a 'periodic' way, so he groups of elements with similar properties into vertical columns in the table. His periodic table had initial 63 elements which then expanded to 108 or 109 elements.
<u>Answer</u>: A - Bryophytes
B - Gymnosperms
C - Angiosperms
D - Dicots
Land plants are divided into non-vascular and vascular plants, according to the presence or absence of a conducting tissue. The diagram in the picture illustrates the division of vascular plants.
The non-vascular plants are divided in turn into Bryophytes and Pterophytes. The Bryophytes are divided into three groups: the liverworts, hornworts and mosses. The vascular plants are also divided into two groups gymnosperms (unprotected seeds) and angiosperms (seeds enclosed within a carpel).
Angiosperms are further divided into monocots and dicots depending on the number of the cotyledons. These are a significant part of the embryo contained within a seed and the first part to emerge from the soils. Monocots (mono - one/single) as is illustrated by their name have only one whereas dicots two (di - two).
Answer:
Breathing is the process of exchange of carbon dioxide and oxygen between the body and the environment. The exchange of gases depends upon the partial pressure of oxygen.
When the individual hold its breath, the amount of oxygen level in the body gets decreased. This increases the carbon dioxide level in the body. The increase in the carbon dioxide level reduces pH and increase the hydrogen ions in the body. The biocarbonate levels in the body also increases.
