When first formed, the embryo consists of three layers of cells. These separate layers eventually form
a. the brain, spinal cord, and nerves.
b. the fetus, the placenta, and the umbilical cord.
c. the fetus, the placenta, and a supply of nutrients.
d. all the tissues and organs of the body.
D
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Describe two factors that influence the emergence of racial bias at around 3 to 5 years of age in most countries.
What will be an ideal response?
Why do researchers use falsification?
A. to eliminate potential bias. B. to prove the validity of their hypothesis. C. to isolate causal variables D. to apply scientific principles to problem solving
T-helper cells have a molecule known as ____ on their surface that enables them to respond to the targeted antigen. It is important to note that, in a reverse of the normal process, the Human Immunodeficiency Virus (HIV) attacks the ____ T cells, which can then lead to an eventual compromise of the immune system against opportunistic infections. a. CD4 c. IgA b. CD8 d. IgE
Fill in the blank(s) with correct word
According to Sternberg, ________ love is the type of love that consists of intimacy and passion only
A) companionate B) consummate C) romantic D) fatuous