Which statement best describes an important process carried out by structure X?
1. Milk passes from the mother to the fetus.
2. Materials are exchanged between fetal and maternal blood.
3. Maternal blood is converted into fetal blood.
4. Oxygen diffuses from fetal blood to maternal blood.

2 materials are exchanged between fetal and maternla blood

Explanation:

i just took this test and this was correct

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

explanation:

the answer is a) a shiprock was formed by igneous process