The structure that connects the placenta to the embryo would be the <u>umbilical cord.</u>
Answer: This bacterium can survive passage through the acidic conditions of the stomach. Inside the small intestine, V. cholerae attaches to the intestinal wall and starts producing cholera toxin. The toxin enters intestinal cells, causing them to release water and ions, including sodium and chloride ions.
By dating the rocks in the ever-changing crust, as well as neighbors such as the moon and visiting meteorites, scientists have calculated that Earth is 4.54 billion years old, with an error range of 50 million years.
Crowdsourcing is a practice wherein a person or group or person engage a crowd or group for a common goal for the purpose of innovation, problem solving or efficiency. New technologies, social media and web 2.0 are used in crowdsourcing. The following are the disadvantages of cowdsourcing: (1)Confidentiality and security. This is the deadliest disadvantage of crowdsourcing. It is essential to keep certain things from competitors but in crowdsourcing, you are dealing with large and anonymous group of people in there may be a malefactor or a direct competitor. (2) Communication. It can be difficult due to time and language barriers. (3) Management. There is an increased need of management because it will mean dealing with a large number of people. (4) Approach. Crowdsourced people may not be as serious or interested. They may not be paying very close attention because they are deeply involve in the project. (5) Quality. There is no guarantee that the result will be of sufficient quality or effective. Some of the respondents may cheat because some of them may just submit copied or plagiarized ideas
