Answer the following question given this paragraph: Q: How do leaves export sugar to roots and other nonphotosynthetic parts of the plant? Choices: - stems - chloroplasts - glands - veins A:
veins
(Question)
Answer the following question given this paragraph: Scientific experiments involve controls , or subjects that are not tested during the investigation. In this way, a scientist limits the factors, or variables that can cause the results of an investigation to differ. A variable is a factor that can change over the course of an experiment. Independent variables are factors whose values are controlled by the experimenter to determine their relationship with an observed phenomenon. Dependent variables are the observed phenomenon, and change in response to the independent variable. Controlled variables are also important to identify in experiments. They are the variables that are kept constant to prevent them from influencing the effect of the independent variable on the dependent variable. Q: Controlled variables are kept what to prevent them from influencing the effects of the independent variable on the dependent variable? Choices: - mechanical - temporary - fleeting - constant A:
(Answer)
constant
Ques: Answer the following question given this paragraph: Q: What type of living things break down dead organisms and recycle their nutrients into the soil? Choices: - producers - consumers - probiotics - decomposers A:
Ans: decomposers
(Q).
Answer the following question given this paragraph: Chapter 2 1 Figure 2.3 Carbon-12 has six neutrons. Carbon-13 has seven neutrons. 3 Figure 2.24 C 4 A 6 C 8 D 10 C 12 D 14 Ionic bonds are created between ions. The electrons are not shared between the atoms, but rather are associated more with one ion than the other. Ionic bonds are strong bonds, but are weaker than covalent bonds, meaning it takes less energy to break an ionic bond compared with a covalent one. 16 Buffers absorb the free hydrogen ions and hydroxide ions that result from chemical reactions. Because they can bond these ions, they prevent increases or decreases in pH. An example of a buffer system is the bicarbonate system in the human body. This system is able to absorb hydrogen and hydroxide ions to prevent changes in pH and keep cells functioning properly. 18 Carbon is unique and found in all living things because it can form up to four covalent bonds between atoms or molecules. These can be nonpolar or polar covalent bonds, and they allow for the formation of long chains of carbon molecules that combine to form proteins and DNA. Q: What is unique and found in all living things because it can form up to four covalent bonds between atoms or molecules? Choices: - hydrogen - oxygen - potassium - carbon A:
(A).
carbon
Ques:Answer the following question given this paragraph: When gas particles heat up and gain energy, they move faster. This increases their collisions with each other and their container, causing greater pressure. Q: When gas particles heat up and gain energy, what do they do? Choices: - go up - stop - move slower - move faster A:

Ans:move faster
Ques:Answer the following question given this paragraph: When sunlight heats Earth's surface, some of the heat radiates back into the atmosphere. Some of this heat is absorbed by gases in the atmosphere. This is the greenhouse effect , and it helps to keep Earth warm. The greenhouse effect allows Earth to have temperatures that can support life. Q: What effect in the atmosphere ensures that the earth maintains the correct temperature to support life? Choices: - coriolis effect - ozone effect - smog effect - greenhouse effect A:

Ans:
greenhouse effect