During implantation, the trophoblast erodes a path through the endometrium. maternal blood vessels in the endometrium are walled off from the blastocyst. inner cell mass begins to form the placenta. entire trophoblast becomes syncytial inner cell mass is temporarily deprived of nutrients

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!