Question

1. the only chemical element known that can form long, stable, complex chains of atoms suitable for life is a. complexium b. dna c. carbon d. silicon e. boron
2. the picture below shows a/an a. martian b. small dinosaur c. science fiction monster d. replicore e. extremophile
3. the interior of uranus is mostly a. iron b. rock c. liquid hydrogen d. liquid methane e. liquid water and ice
4. about how many stars are there in the solar system? a. one b. a few hundred c. about ten million d. about 200 billion

true / false questions

1. an increased number of sunspots on the sun causes lower temperature on earth. a. true b. false

Explanation:

1. Carbon can form long - chain, stable and complex molecular structures essential for life due to its ability to form four covalent bonds.
2. The organism in the picture is a tardigrade, which is an extremophile capable of surviving in extreme conditions.
3. The interior of Uranus is mainly composed of liquid water, ammonia, and methane ices, along with some rock and metal in the core. Liquid water and ice is the closest option.
4. The Solar System has only one star, the Sun.
5. An increased number of sunspots is associated with higher solar activity, which generally leads to higher Earth temperatures, so the statement is false.

Answer:

1. C. carbon
2. E. extremophile
3. E. liquid water and ice
4. A. One
5. B. FALSE