Answer:
D. Bryophytes
Explanation:
They are usually the first colonizers. Their root system which aren't true roots, called Rhizoids help attach them to Rocky surface.
Answer:
Oxytocin
Explanation:
The release of oxytocin is signaled by the fetal brain about 38 weeks after conception. Oxytocin is also called birth hormone as it stimulates uterine contraction.
The uterine contractions stimulate the release of more oxytocin through a positive feedback loop. Oxytocin stimulates contraction of the smooth muscles in the wall of the uterus which in turn finally leads to childbirth.
Answer:
The correct answer is C. Due to increased shark populations, seal populations have more streamlined bodies.
Explanation:
Natural selection can only be compared between organisms of the same species. The comparison between sharks and seals is not an example of natural selection because it doesn't explain properly why there's a relationship between the two species and how it led to a change in the seals' bodies.