Explanation:
During implantation, the trophoblast differentiates into two distinct layers: the inner cytotrophoblast, and the outer syncytiotrophoblast.
The study enables scientists to understand the importance of the roles that genes and environment play in intelligence.
<h3>What is inteligience study?</h3>
The term intelligience study has to do with the asessment of individuals to effectively complete a given task in short period of time.
Twins share the same environment hence, scientists can be able to decode the importance of the roles that genes and environment play in intelligence.
Learn more about intelligence:brainly.com/question/9944825
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<span>Briefly describe three of the key recommendations of the Dietary Guidelines for Americans
</span><span>.
-Balance calories with physical activity to manage weight ;
-Eat more of certain foods and nutrients such as fruits, vegetables,
whole grains, fat-free and low-fat dairy products, and seafood ;
-Eat fewer foods with sodium (salt), saturated fats, trans fats, cholesterol, added sugars, and refined grains.</span>
Low self-esteem is how you feel about yourself, feelings of low self-esteem include: feeling bad about yourself more than you feel good. lack of self-respect, low confidence
It also loses the wall of the uterus
