Which vitamin is also known as ascorbic acid? MCQ with Answer and Explanation

Explanation:
Fossils provide direct, tangible evidence of past life forms and evolutionary changes over geological time. Comparative anatomy (homologous/analogous organs), embryology (similar early stages), and molecular biology (DNA/protein sequence similarities) provide indirect evidence. Fossils show transitional forms like Archaeopteryx (between reptiles and birds).

Explanation:
Anthrax is a zoonotic disease caused by the spore-forming bacterium Bacillus anthracis. It can infect skin, lungs, and gastrointestinal tract. Streptococcus pyogenes causes strep throat, Salmonella typhi typhoid, Vibrio cholerae cholera. Anthrax spores can survive for decades in soil and have been used as a bioweapon.

Explanation:
The limbic system is a group of brain structures located on both sides of the thalamus, supporting emotion, behavior, motivation, long-term memory, and olfaction. The amygdala is an almond-shaped collection of nuclei located deep within the medial temporal lobes. It is a crucial component of the limbic system primarily associated with processing emotions, particularly fear, anxiety, and aggression. It plays a key role in the 'fight or flight' response and in attaching emotional significance to memories. The hippocampus is primarily for forming new declarative memories.