Answer the following question given this paragraph: Evolution is a change in the characteristics of living things over time. Evolution occurs by a process called natural selection. In natural selection , some living things produce more offspring than others, so they pass more genes to the next generation than others do. Over many generations, this can lead to major changes in the characteristics of living things. Evolution explains how living things are changing today and how modern living things have descended from ancient life forms that no longer exist on Earth. Q: What is the change of characteristics of living things over time? Choices: - spontaneous mutation - adaptation - generation - evolution A:
evolution
Answer the following question given this paragraph: Momentum is a vector that points in the direction of the velocity vector. The magnitude of this vector is the product of mass and speed. Q: The magnitude of the momentum vector is the product of what two properties? Choices: - acceleration and speed - work and speed - volume and speed - mass and speed A:
mass and speed
Q: Answer the following question given this paragraph: Extrusive igneous rocks form above the surface. The lava cools quickly as it pours out onto the surface ( Figure below ). Extrusive igneous rocks cool much more rapidly than intrusive rocks. The rapid cooling time does not allow time for large crystals to form. So igneous extrusive rocks have smaller crystals than igneous intrusive rocks. Extrusive igneous rocks are also called volcanic rocks . Q: Extrusive igneous rocks are also called what? Choices: - metamorphic - agates - magma minerals - volcanic rocks A:
A: volcanic rocks
Question: Answer the following question given this paragraph: Q: Where is food stored? Choices: - The gall bladder - The liver - The esophagus - the stomach A:
Answer: the stomach
*Question*
Answer the following question given this paragraph: The Zygote Recall that at the point of fertilization, the oocyte has not yet completed meiosis; all secondary oocytes remain arrested in metaphase of meiosis II until fertilization. Only upon fertilization does the oocyte complete meiosis. The unneeded complement of genetic material that results is stored in a second polar body that is eventually ejected. At this moment, the oocyte has become an ovum, the female haploid gamete. The two haploid nuclei derived from the sperm and oocyte and contained within the egg are referred to as pronuclei. They decondense, expand, and replicate their DNA in preparation for mitosis. The pronuclei then migrate toward each other, their nuclear envelopes disintegrate, and the male- and femalederived genetic material intermingles. This step completes the process of fertilization and results in a single-celled diploid zygote with all the genetic instructions it needs to develop into a human. Most of the time, a woman releases a single egg during an ovulation cycle. However, in approximately 1 percent of ovulation cycles, two eggs are released and both are fertilized. Two zygotes form, implant, and develop, resulting in the. Q: During the typical human female ovulation cycles, how many eggs are released? Choices: - four - two - three - one A:
**Answer**
one
(Q).
Answer the following question given this paragraph: Organs of the lymphatic system include the tonsils, thymus gland and spleen. The thymus gland produces T cells or T-lymphocytes (see below) and the spleen and tonsils help in fighting infections. The spleen's main function is to filter the blood. The spleen also detects viruses and bacteria and triggers the release of pathogen fighting cells. Q: What does the thymus gland produce? Choices: - b cells - insulin - hormones - t cells A:
(A).
t cells