Line 1: *Animals are a kingdom of multicellular eukaryotes. Invertebrates are the majority of the animal kingdom. The majority of multicellular eukaryotes are invertebrates.*
*(H)*
Line 2: *The majority of multicellular eukaryotes are:
Options:
- (A) Most plants
- (B) infectious
- (C) viruses
- (D) bacteria
- (E) Absorb light
- (F) insects
- (G) important habitats
- (H) invertebrates*

Logic of a solution: *Earthworms are important deposit feeders that help form and enrich soil. Deposit feeders ingest sediment and then extract the food. Earthworms ingest sediment to then help form and enrich soil.*
*(C)*
The original question: *What do earthworms ingest in order to form and enrich soil?
Options:
- (A) segmented
- (B) vegetation
- (C) sediment
- (D) bacteria
- (E) Chlorophyll
- (F) sandworm
- (G) crawling
- (H) dirt*

Line 1: *Viruses are usually considered to be nonliving. All matter, living and nonliving, is made up of atoms. Viruses are made up of atoms.*
*(F)*
Line 2: *Atoms make up many things, like what?
Options:
- (A) glass
- (B) matter
- (C) A computer
- (D) Fuel cells
- (E) copper
- (F) viruses
- (G) Light
- (H) Energy*

Logic of a solution: *Translation reads the genetic code in mRNA and makes a protein. Gene expression can be regulated at the level of translation of an mRNA into a protein. Translation reads and regulates gene expression.*
*(E)*
The original question: *What process reads and regulates gene expression?
Options:
- (A) organs
- (B) sensory neurons
- (C) A computer
- (D) Plants growth
- (E) translation
- (F) sweating
- (G) heat or cold
- (H) Most plants*

Line 1: *Bottleneck effect occurs when a population suddenly gets much smaller. Population size is the predictor of extinction probability. Bottleneck effect can be a precursor to extinction.*
*(H)*
Line 2: *Bottleneck effect can be a precursor to what?
Options:
- (A) massive damage
- (B) Climate change
- (C) Destroy bridges
- (D) Cambrian explosion
- (E) ground to shake
- (F) clams
- (G) soda
- (H) extinction*

Line 1: *Excretion is the process of removing wastes and excess water from the body. Major route of excretion is in the feces. Feces are a major route of removing wastes and excess water from the body.*
*(B)*
Line 2:
*What is a major route of removing wastes from the body?
Options:
- (A) Detoxifying teas
- (B) Feces
- (C) Burping
- (D) Essential Oils
- (E) glucose
- (F) sodium
- (G) NaCl
- (H) rivers*