Problem: OPTIONS:
- galaxies
- planets
- comets
- stars
Q: Q: "red-shift" refers to a shift toward red in the spectrum from what celestial bodies? A:
Answer: stars

Problem:OPTIONS:
- vines
- perennials
- roses
- ophrys

Q: What type of flowers offer no reward, such as nectar, to a male wasp? A:
****
A: ophrys

Q: What is made up of nerve cells that sense stimuli and transmit signals? A:
OPTIONS:
- muscle tissues
- blood tissue
- dependent tissue
- nervous tissue
nervous tissue

Q: What is another word for brooding- keeping eggs warm while the embryos develop? A:
OPTIONS:
- spawning
- fertilization
- hibernation
- incubation

Answer: incubation

Question: Q: How many chromosomes do bacterial dna have? A:
OPTIONS:
- one rectangular chromosome
- one triangular chromosome
- one simple chromosome
- one circular chromosome
Answer: one circular chromosome

input: OPTIONS:
- disregard other species
- imitate other species
- help other species
- threaten other species Now, answer this question: Q: Why are exotic species also called invasive species? A:
A:
output:
threaten other species