I would say that it comes from rain overtime
Prokaryotes lack an organized nucleus and other membrane-bound organelles, the prokaryotic DNA is found in the central part of the cell called the nucleons, the cell size ranges from 0.1 to 5.0 in diameter, the cell wall of a prokaryote acts as an extra layer of protection, helps maintain cell shoe and prevents dehydration.
The inner cellular layer of trophoblast that remains intact inside the blastocyst is termed Cytotrophoblast.
Cytotrophoblast is the inner layer of the trophoblast.
It is found on the outer side of the Blastocyst and inner side of the Syncytiotrophoblast.
Cytotrophoblast remains intact inside the blastocyst and is present as a inner cellular layer of trophoblast.
Cytotrophoblast produces several hormones like:
- GnRH
- Progesterone
- HCG
- Estrogen
Cytotrophoblast attaches the fetus that is growing to the uterine wall of the mother's body.
It plays an important role in embyro's transplantation.
Cytotrophoblast releases Proteinaceous enzymes between the endometrial cells allowing many finger-like projections.
Learn more about Blastocyst here, brainly.com/question/3238975
#SPJ4
Its a physical change because ur changing its form but its still paper. chemical is when u basically change what it is (ex= water to ice)
Answer: The dependent variable.
Explanation: Experimental studies are designed to find relationships between one variable and another.