Answer:
ecosystem has seen a decrease in wetland areas and ... The graph below shows the size of a population of foxes over a period of years. ... B) greater reproductive success ... A) Both species evolved through the process of ecological succession.
Explanation:
Answer:
The correct answer would be d. thymus.
The thymus is a specialized lymphoid organ of an immune system.
It serves as the site for training and maturation of T-lymphocytes or T cells.
It is composed two identical lobes each containing outer region termed as cortex and inner region termed as medulla.
T-cells are first trained and selected in the cortex region via positive selection. In this, T cells which are able to bind to foreign antigens are selected and rest are degraded.
The selected T cells then move in the medulla region where they are selected by negative selection. In this, the T cells which binds to self-antigens are degraded and rest survive to become functional T cells.
It is thought to partition transcription and processing of messenger RNAs (mRNAs), which occur in the nucleus, from protein synthesis (translation), which is observed in the cytoplasm. Several recent reports have challenged this widely accepted idea by asserting that translation can also occur in the nucleus.
using cars that get lower gas mileage
