Answer the following question given this paragraph: The first species to colonize a disturbed area such as this are called pioneer species (see Figure below ). They change the environment and pave the way for other species to come into the area. Pioneer species are likely to include bacteria and lichens that can live on bare rock. Along with wind and water, they help weather the rock and form soil. Once soil begins to form, plants can move in. At first, the plants include grasses and other species that can grow in thin, poor soil. As more plants grow and die, organic matter is added to the soil. This improves the soil and helps it hold water. The improved soil allows shrubs and trees to move into the area. Q: What are species that are first to colonize a disturbed area called? Choices: - novel species - exploratory species - brave species - pioneer species A:
pioneer species
Answer the following question given this paragraph: The placenta is a spongy mass of blood vessels. Some of the vessels come from the mother. Some come from the fetus. The placenta is attached to the inside of the mother's uterus. The fetus is connected to the placenta by a tube called the umbilical cord . The cord contains two arteries and a vein. Substances pass back and forth between the mother's and fetus's blood through the placenta and cord. Oxygen and nutrients pass from the mother to the fetus. Carbon dioxide passes from the fetus to the mother. Q: The fetus is connected to what by a tube called the umbilical cord? Choices: - Stomach - Intestines - Fallopian tube - placenta A:
placenta
Q: Answer the following question given this paragraph: Each kidney has more than a million nephrons, which are the structural and functional units of the kidney. Each nephron is like a tiny filtering plant. Q: What are the structural and functional units of the kidney called? Choices: - Ions - caldrons - aeons - nephrons A:
A: nephrons
Question: Answer the following question given this paragraph: Ocean water is salty because water dissolves minerals out of rocks. The ions enter the water. This happens whenever water flows over or through rocks. Much of this water and its minerals end up in the oceans. Minerals dissolved in water form salts. When the water evaporates, it leaves the salts behind. As a result, ocean water is much saltier than other water on Earth. Q: Ocean water has what property because water dissolves minerals out of rocks? Choices: - fizzy - sweet - muddy - salty A:
Answer: salty
*Question*
Answer the following question given this paragraph: Q: Catenulids typically reproduce asexually by budding where? Choices: - their anterior end - their neuronal end - their analogous end - their posterior end A:
**Answer**
their posterior end
*Question*
Answer the following question given this paragraph: Q: What two-word term refers to the number of different species in the community? Choices: - bacteria richness - group-richness - face-richness - species richness A:
**Answer**
species richness