Answer the following question given this paragraph: The basic unit of matter is an atom ( Figure below ). At the center of an atom is its nucleus . Protons are positively charged particles in the nucleus. Also in the nucleus are neutrons with no electrical charge. Orbiting the nucleus are tiny electrons. Electrons are negatively charged. An atom with the same number of protons and electrons is electrically neutral. If the atom has more or less electrons to protons it is called an ion . An ion will have positive charge if it has more protons than electrons. It will have negative charge if it has more electrons than protons. Q: What is the basic unit of matter? Choices: - nucleus - dark material - neutron - atom A:
atom
(Question)
Answer the following question given this paragraph: During adolescence, estrogen causes the changes of puberty. It causes the reproductive organs to mature. It also causes other female traits to develop. For example, it causes the breasts to grow and the hips to widen. Q: What causes the changes of puberty? Choices: - glucose - insulin - testosterone - estrogen A:
(Answer)
estrogen
Ques: Answer the following question given this paragraph: Most vascular plants are seed plants, or spermatophytes. They reproduce with seeds and pollen. Some modern seed plants are gymnosperms that produce seeds in cones. Q: What is the term for seed plants? Choices: - sporozoans - proteins - germospores - spermatophytes A:
Ans: spermatophytes
(Q).
Answer the following question given this paragraph: 29.4 | Reptiles By the end of this section, you will be able to: Describe the main characteristics of amniotes Explain the difference between anapsids, synapsids, and diapsids, and give an example of each Identify the characteristics of reptiles Discuss the evolution of reptiles The amniotes reptiles, birds, and mammalsare distinguished from amphibians by their terrestrially adapted egg, which is protected by amniotic membranes. The evolution of amniotic membranes meant that the embryos of amniotes were provided with their own aquatic environment, which led to less dependence on water for development and thus allowed the amniotes to branch out into drier environments. This was a significant development that distinguished them from amphibians, which were restricted to moist environments due their shell-less eggs. Although the shells of various amniotic species vary significantly, they all allow retention of water. The shells of bird eggs are composed of calcium carbonate and are hard, but fragile. The shells of reptile eggs are leathery and require a moist environment. Most mammals do not lay eggs (except for monotremes). Instead, the embryo grows within the mother's body; however, even with this internal gestation, amniotic membranes are still present. Q: What are mammals that lay eggs called? Choices: - kangaroos - amphibians - herbivores - monotremes A:
(A).
monotremes
Ques:Answer the following question given this paragraph: Compact bone makes up the dense outer layer of bones. Q: What makes up the dense outer layer of bones? Choices: - marrow - scales - cartilage - compact bone A:

Ans:compact bone
Question: Answer the following question given this paragraph: The lithosphere is made of the rigid, brittle, solid crust and uppermost mantle. Q: Which part of the earth is made of the rigid, brittle, solid crust and uppermost mantle? Choices: - troposphere - thermosphere - atmosphere - lithosphere A:
Answer:
lithosphere