Answer:
Cell, tissue, organ, organism.
Explanation:
Cells are the basic living unit of all of life and so they make up everything. Once cells bond together to carry out a specific function it is considered a tissue. Tissues make up organs which then make up an organism (like humans or animals).
A tract is used to describe a collection of axons in the brain stem
Answer:
Transcriptomics.
Explanation:
Transcriptomics may be defined as the field of biology that mainly deals with the study and collection of the mRNA molecules. Various techniques like DNA microarray and exon shuffling is used in transcriptomics.
Messenger RNA molecule are collected from the source that are produced by the cells. Transcriptomics helps the scientist to determine the similarities and differences in the gene expression pattern between the different cells.
Thus, the correct answer is option (2).
during an ice age mostly the earths oceans freeze
