Answer the following question given this paragraph: Bacterial STIs include chlamydia, gonorrhea, and syphilis. Q: Chlamydia, gonorrhea, and syphilis are examples of which type of sti? A:
OPTIONS:
- non-contagious
- viral
- incurable
- bacterial
bacterial
--
Answer the following question given this paragraph: Composite volcanoes are common along convergent plate boundaries. When a tectonic plate subducts, it melts. This creates the thick magma needed for these eruptions. The Pacific Ring of Fire is dotted by composite volcanoes. Q: What happens to a tectonic plate when it subducts? A:
OPTIONS:
- it warms
- it cracks
- it sinks
- it melts
it melts
--
Answer the following question given this paragraph: 11.2 Mechanisms of Evolution There are four factors that can change the allele frequencies of a population. Natural selection works by selecting for alleles that confer beneficial traits or behaviors, while selecting against those for deleterious qualities. Mutations introduce new alleles into a population. Genetic drift stems from the chance occurrence that some individuals have more offspring than others and results in changes in allele frequencies that are random in direction. When individuals leave or join the population, allele frequencies can change as a result of gene flow. Q: Out of the four ways that allele frequencies of a population can be changed, which way is caused by individuals leaving or joining the population? A:
OPTIONS:
- Allopatric speciation
- spontaneous mutation
- mass extinction
- gene flow
gene flow
--
Answer the following question given this paragraph: Terrestrial biomes include all the land areas on Earth where organisms live. The distinguishing features of terrestrial biomes are determined mainly by climate. Terrestrial biomes include tundras, temperate forests and grasslands, chaparral, temperate and tropical deserts, and tropical forests and grasslands. Q: What factor largely determines the distinguishing features of terrestrial biomes? A:
OPTIONS:
- density
- sea level
- migration
- climate
climate
--