Answer:
The correct answer would be C. Left untreated, it can cause intellectual disability.
Phenylketonuria (PKU) is a rare autosomal recessive disorder caused by a defect in a gene responsible for making phenylalanine digesting enzyme.
This defect leads to the lack or deficiency of this enzyme in the body. Consequently, phenylalanine builds up in the body.
People with this disorder are usually put on a restricted diet which restricts protein-rich food (such as milk, meat, cheese etc as they contain amino acid phenylalanine) from their meals.
Untreated PKU can cause various complications such as brain damage (intellectual disability), neurological problems, major health and development problems etc.
Answer:
switch photosynthesis and celular respiration
Answer:
Cyclical changes in eccentricity are changes in the shape of Earth's orbit.
Changes in obliquity are the changes in Earth's tilt on its axis.
Earth also experiences a precession around its axis.
The cycles affect climate by altering the duration of Earth's seasons and temperature decreases between summer and winter
Explanation:
An organism that makes its own food.
Example- plants.
The first organism in a food chain is always a plant.
