<span>The oldest known vascular plants in the northern hemisphere are Devonian
This is true</span>
Answer:
True
Explanation:
Anaphylaxis is an acute allergic reaction to an antigen (e.g. a bee sting) to which the body has become hypersensitive.
Common symptoms include:
- Skin reactions such as itching and hives
- Flushed and pale Skin
- Lower blood pressure
- Difficulty breathing
- Choking
- Weak and rapid pulse rate
- Vomiting
- Nausea
- Dizziness or fainting
Mark brainliest please
They classify on how they reproduce.
