The correct answer is: about 20 percent.
Fish is one of the major sources of animal protein around the world. This is especially case for the people who live on the coast.
Other source of the animal protein is red meat. About 70 percent comes from animals such as cows, goats, sheep, buffalo, deer.
When it comes to non-meat protein food, eggs and dairy products provide good energy source.
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.
Vascular plants appered during the same perod as mammals
Explanation:
Answer:
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Explanation:
Answer options:
- fruit
- pollen
- flower
- seed
- spore
Answer:
flower
fruit
Explanation:
Angiosperms include all flowering plants. Therefore, all plants in this group have flowers, whereas other groups do not.
Both angiosperms and gymnosperms have seeds, but angiosperms are defined by the fact that their seeds develop within a surrounding layer of usually the flower. Both angiosperms and gymnosperms also have pollen - likely an adaptation to living on dry land. Many plants produce spores, not just angiosperms.
Angiosperms produce fruit, unlike other plant groups. This fruit is the protective layer that encases their seeds, unlike gymnosperms, where the seeds are 'naked'
