The question is asking to answer the following questions and base on my further research and investigation, I would say that answer would be the following:
#1 D. Oceanic crust is thinner and less dense than continental crust.
#2 B. where an oceanic plate is moving toward a continental plate
#3 A. The seafloor is spreading.<span>
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All choices correctly describes physical barriers. Physical barriers after composed of tight junctions wherein it is difficult for the bacteria and viruses to penetrate. Examples of these physical barriers are the skin and the mucous membranes and these work in conjunction with secretions like tears and mucus (as tears and mucus contain IgA, a special type of immunoglobulin that is secreted to fight harmful organisms).
Answer:
Adolescence is the period of transition between childhood and adulthood. It includes some big changes—to the body, and to the way a young person relates to the world.
The many physical, sexual, cognitive, social, and emotional changes that happen during this time can bring anticipation and anxiety for both children and their families. Understanding what to expect at different stages can promote healthy development throughout adolescence and into early adulthood.
Animal cloning offers great benefits to consumers, farmers, and endangered species: Cloning allows farmers and ranchers to multiply the reproduction of their productivity of livestock in order to produce safe and healthy food for the community. Cloning can be used to protect endangered species. For example, in China, panda cells are being kept on reserve should this species' numbers be threatened by extinction.
Hope this helped darling!
