Answer:
D.) both a and c
Explanation:
Past observations made early in history as well as telescopes and space probes are very important in studying our universe and galaxies.
- Space probes are increasingly gaining momentum as technological and scientific advancements are being made.
- Telescopes are used to see or picture objects that are very far away in space.
- Also, understanding the past records and historical data is essential for the study of the universe.
Microscopes are not used in galactic studies. They are only used to study the world of micro-organisms.
Answer:
Transgenic organism are the genetically modified organisms on their molecular level by altering their gene to improve the particular quality that is related to the particular gene in the organisms. It can be perform in bacteria, plants and animals, the produced organisms called transgenic organisms. The beneficial applications of such organism are given as follows:
Transgenic bacteria: these bacteria are first organisms to be genetically modified and used for several functions such as human proteins, producing material plastics and many more.
Transgenic plants: such genetically modified plants can be used to enhance food quality and quantity, to make pest resistant breed and increase the extreme condition tolerance and many more.
Transgenic animals: they are used to improve the quality of food supply, improve medicines and research purposes and many more applications.