The correct answer is A. Provides body tissues with oxygen
Explanation:
The respiratory system includes different organs such as the lungs, diaphragm, trachea, etc. that allow organisms especially animals to exchange gases that are necessary to survive. This mainly occurs as oxygen is taken from air or water in the case of fish and other aquatic animals and this provides the body tissues with oxygen that is necessary for multiple processes and at the same time it takes out the carbon dioxide through exhalation. Considering this, it can be concluded the respiratory system provides body tissues with oxygen.
A. photosynthesis.
Photosynthesis is the process of turning solar energy into food. This process is done by organelles (mini organs) in the cells of a plant. These organelles are called cytoplasts.
The organisms which are responsible for absorbing carbon from the atmosphere is the trees and plants.
Plants are known as predominant photosynthetic eukaryotes which are mainly multicellular. They are found in the kingdom Plantae. Plants were treated as of the two kingdoms which included all living things that were not animals.
Fungi and algae were treated as plants. Green plants have cell walls which contain cellulose. They get their energy from the sun via the process of photosynthesis.
The scientists that won the Nobel Prize for publishing the first description of the structure of DNA were Watson & Crick.
Answer:
Restriction Enzymes
Explanation:
It is restriction enzymes specifically, which are used to cut DNA into fragments. Restriction enzymes can be regarded as biological scalpels which can produce either a blunt end or sticky end in DNA.
