user: Answer the following question given this paragraph:   For individuals to cooperate, they need to communicate . Animals can communicate with sounds, chemicals, or visual cues. For example, to communicate with sounds, birds sing and frogs croak. Both may be communicating that they are good mates. Ants communicate with chemicals called pheromones . For example, they use the chemicals to mark trails to food sources so other ants can find them. Male dogs use pheromones in urine to mark their territory. They are “telling” other dogs to stay out of their yard. You can see several examples of visual communication in Figure below .   Q: Sounds, chemicals, and visual cues are examples of what between animals?   Choices:  - migration  - circulation  - procreation  - communication  A:
communication


Answer the following question given this paragraph:   From a human point of view, natural resources can be classified as either renewable or nonrenewable. Renewable resources, such as sunlight and living things, can be remade quickly by natural processes. Nonrenewable resources, such as fossil fuels and soil, cannot be remade or else take millions of years to remake.   Q: These resources can be remade quickly, through natural processes   Choices:  - fossil fuel  - non-renewable  - electric  - renewable  A:
renewable


Q: Answer the following question given this paragraph:   In sexually reproducing species, chromosomes are present in cells in pairs. Chromosomes in the same pair are called homologous chromosomes. They have the same genes at the same loci. These may be the same or different alleles. During meiosis, when gametes are produced, homologous chromosomes separate. They go to different gametes. Thus, the alleles for each gene also go to different gametes.   Q: What are chromosomes in the same pair called?   Choices:  - homogeneous chromosomes  - regulated chromosomes  - reversible chromosomes  - homologous chromosomes  A:
A: homologous chromosomes


Question: Answer the following question given this paragraph:   The phagocytes that are part of the body’s second line of defense attack any pathogens they encounter. They provide a general defense. Some white blood cells attack only certain pathogens. They provide a specific defense.   Q: The phagocytes that are part of the body’s second line of defense attack any of what that they encounter?   Choices:  - viruses  - vaccines  - parasites  - pathogens  A:
Answer: pathogens


*Question*
Answer the following question given this paragraph:   Equations in chemistry must balance. There must be the same number of each type of atom in the products as there is in the reactants. Coefficients are used to balance chemical equations. They show how many atoms or molecules of a substance are involved in a reaction.   Q: In science, coefficients are used to balance what kind of equations?   Choices:  - liquid  - isolated  - mineral  - chemical  A:
**Answer**
chemical


Q: Answer the following question given this paragraph:   Some of the most interesting kinds of evidence for evolution are body parts that have lost their use through evolution ( Figure below ). For example, most birds need their wings to fly. But the wings of an ostrich have lost their original use. Structures that have lost their use through evolution are called vestigial structures . They provide evidence for evolution because they suggest that an organism changed from using the structure to not using the structure, or using it for a different purpose.   Q: Structures that have lost their use through evolution are called _______   Choices:  - primordial structures  - residual structures  - symbiotic structures  - vestigial structures  A:


assistant: A: vestigial structures