Answer the following question given this paragraph: Some unexpected traits can appear in animal embryos. For example, human embryos have gill slits just like fish! In fish they develop into gills, but in humans they disappear before birth. The presence of the gill slits suggests that a long time ago humans and fish shared a common ancestor. Q: What does the presence of gill slits suggest about humans and fish? Choices: - Shared History - Common Cells - Same evolutionary chain - common ancestor A:
common ancestor
(Question)
Answer the following question given this paragraph: 6.2 The Cell Cycle The cell cycle is an orderly sequence of events. Cells on the path to cell division proceed through a series of precisely timed and carefully regulated stages. In eukaryotes, the cell cycle consists of a long preparatory period, called interphase. Interphase is divided into G1, S, and G2 phases. Mitosis consists of five stages: prophase, prometaphase, metaphase, anaphase, and telophase. Mitosis is usually accompanied by cytokinesis, during which the cytoplasmic components of the daughter cells are separated either by an actin ring (animal cells) or by cell plate formation (plant cells). Each step of the cell cycle is monitored by internal controls called checkpoints. There are three major checkpoints in the cell cycle: one near the end of G1, a second at the G2M transition, and the third during metaphase. Q: What consists of these five stages: prophase, prometaphase, metaphase, anaphase, and telophase? Choices: - evolution - germination - meiosis - mitosis A:
(Answer)
mitosis
Ques: Answer the following question given this paragraph: Now we move on to recycle. Sometimes it may be difficult to understand the differences between reusing and recycling. Recycling involves processing used materials in order to make them suitable for other uses. That usually means taking a used item, breaking it down, and reusing the pieces. Even though recycling requires extra energy, it does often make use of items which are broken, worn out, or cannot be reused. Q: What is the process of processing used material into new ones called? Choices: - remake - renew - reuse - recycling A:
Ans: recycling
(Q).
Answer the following question given this paragraph: You may have seen this sign beforemaybe in a hospital. The sign means there is danger of radiation in the area. Radiation consists of particles and energy that are given off by radioactive isotopes, which have unstable nuclei. But you don't have to go to a hospital to be exposed to radiation. There is radiation in the world all around you. Q: Radioactive isotopes are characterized by an unstable what? Choices: - shell - proton - electrons - nuclei A:
(A).
nuclei
Ques:Answer the following question given this paragraph: Molds and casts are another way organisms can be fossilized. A mold is an imprint of an organism left in rock. The organism's remains break down completely. Rock that fills in the mold resembles the original remains. The fossil that forms in the mold is called a cast ( Figure below ). Molds and casts usually form in sedimentary rock. With compression ( Figure below ), an organism's remains are put under great pressure inside rock layers. This leaves behind a dark stain in the rock. Q: Molds and casts usually form in which type of rock? Choices: - igneous - metamorphic - crystalline - sedimentary A:

Ans:sedimentary
Ques:Answer the following question given this paragraph: Yes, in some ways. Ocean waves travel at the interface between the sea surface and the atmosphere. They have all the features that all waves have. Some seismic waves also travel at an interface. Which ones?. Q: What travels at the interface between the sea surface and the atmosphere? Choices: - ocean currents - ocean tides - ocean breeze - ocean waves A:

Ans:
ocean waves