Answer the following question given this paragraph: The highest-numbered shell is the third shell, which has 2 electrons in the 3s subshell and 3 electrons in the 3p subshell. That gives a total of 5 electrons, so neutral phosphorus atoms have 5 valence electrons. The 10 remaining electrons, from the first and second shells, are core electrons. Q: How many valence electrons do neutral phosphorus atoms have? Choices: - nine - three - four - five A:
five
(Question)
Answer the following question given this paragraph: Q: What's the process responsible for the presence of oxygen in our atmosphere? Choices: - respiration - ozone - glycolysis - photosynthesis A:
(Answer)
photosynthesis
Ques: Answer the following question given this paragraph: Sulfuric acid is produced in extremely large quantities in the United States (about 40 million tons/year). This material is manufactured by oxidizing sulfur to form sulfur trioxide. The SO 3 is then dissolved in water to form the sulfuric acid. Most of the sulfuric acid produced is used in fertilizers. This acid is also found in lead-acid car batteries. Q: What is sulfur trioxide dissolved in to form sulfuric acid? Choices: - silver - mercury - lead - water A:
Ans: water
(Q).
Answer the following question given this paragraph: Flatworms have a mesoderm cell layer and simple organ systems. They also show cephalization and bilateral symmetry. Q: What type of cell layer do flatworms have? Choices: - epidermis - cuticle - endoderm - mesoderm A:
(A).
mesoderm
Ques:Answer the following question given this paragraph: Pressure shows how concentrated the force is on a given area. The smaller the area to which force is applied, the greater the pressure is. Think about pressing a pushpin, like the one in Figure below , into a bulletin board. You apply force with your thumb to the broad head of the pushpin. However, the force that the pushpin applies to the bulletin board acts only over the tiny point of the pin. This is a much smaller area, so the pressure the point applies to the bulletin board is much greater than the pressure you apply with you thumb. As a result, the pin penetrates the bulletin board with ease. Q: What is the effect on pressure when the area of applied force is very concentrated? Choices: - direction increases - pressure disperses - pressure reduces - pressure increases A:

Ans:pressure increases
Answer the following question given this paragraph: Note Surgical removal is often advised for a gallbladder that becomes infected, inflamed, or perforated. This surgery does not seriously affect digestion because bile is still produced. Q: Gall bladder removal surgery does not seriously affect digestion because ______ is still being produced. Choices: - saliva - blood - plasma - bile A:
bile