Answer:
True. You can get vitamin A as "preformed vitamin A" which is already active and/or you can get vitamin A as carotenoids which the body can turn into active vitamin A.
Explanation:
There are two different types of vitamin A that can be obtained from food:
1. Preformed vitamin A, which is already active, is found in animal products such as beef, fish, poultry and dairy products.
2. Provitamin A, which is the inactive form, is found in plant-based foods, such as fruits and vegetables. The most common type of provitamin A is β-carotene, which is a carotenoid that the body can turn into active vitamin A via an enzyme named β-carotene 15,15'-monooxygenase.
Answer:
the virus undergoes genetic changes
Answer: The sun
Explanation: Primary producers obtain their energy via the sun through the process of photosynthesis.
I would say do to the ingress of of hummus that have chage n invaded. land it changed there food an water source were as like human man has changed look at them back then and now there range per day is not like it was now food plus WATER man has changed to more then 76% or humans have come LAZY n. well FAT wetre we have done made the mistake of changing what should have just been left alone
