Answer the following question given this paragraph: A biofilm is a thin layer of bacteria that sticks to a surface. Cells in a biofilm are all alike, but they may play different roles, such as taking in nutrients or making the "glue" that sticks the biofilm to the surface. The sticky plaque that forms on teeth is a biofilm of bacterial cells. Q: What is a thin layer of bacteria that sticks to a surface? Choices: - a choanocyte - a spicule - a monofilm - a biolfilm A:
a biolfilm
Answer the following question given this paragraph: Each field of life science has its own specific body of knowledge and relevant theories. However, two theories are basic to all of the life sciences. They form the foundation of every life science field. They are the cell theory and the theory of evolution by natural selection. Both theories have been tested repeatedly. Both are supported by a great deal of evidence. Q: The cell theory and the theory of evolution by natural selection are basic to all fields in what branch of science? Choices: - rock science - zoology - chemistry - life science A:
life science
Q: Answer the following question given this paragraph: Climate conditions in a small area may be different from those of the surroundings. The climate of the small area is called a microclimate . The microclimate of a valley may be cool relative to its surroundings since cold air sinks. The ground surface may be hotter or colder than the air a few feet above it. This is because rock and soil gain and lose heat readily. Different sides of a mountain will have different microclimates. In the Northern Hemisphere, a south-facing slope receives more solar energy than a north-facing slope. Each side supports different amounts and types of vegetation. Q: What is the climate of a small area called? Choices: - ecosystem - biome - microevolution - microclimate A:
A: microclimate
Question: Answer the following question given this paragraph: Mutualism is a symbiotic relationship in which both species benefit. Q: Mutualism is a symbiotic relationship that has what effect on both species involved? Choices: - disadvantageous - harmful - destructive - beneficial A:
Answer: beneficial
*Question*
Answer the following question given this paragraph: Q: Organisms interact with each other and what else? Choices: - thermal environment - atmospheric environment - outside enviroment - physical environment A:
**Answer**
physical environment
Answer the following question given this paragraph: Q: The toothlessness of modern birds, which serves to trim the weight of the head, is an example of what? Choices: - mutation - genetic drift - variety - adaptation A:
adaptation