Answer the following question given this paragraph: For decades Pluto was a planet. But even then, scientists knew it was an unusual planet. The other outer planets are all gas giants. Pluto is small, icy and rocky. With a diameter of about 2400 kilometers, it has only about 1/5 the mass of Earth's Moon. The other planets orbit in a plane. Pluto's orbit is tilted. The shape of the orbit is like a long, narrow ellipse. Pluto's orbit is so elliptical that sometimes it is inside the orbit of Neptune. Q: Pluto's orbit is so elliptical that sometimes it is inside the orbit of which planet? A:

OPTIONS:
- titan
- Mars
- Earth
- neptune

Answer: neptune

Problem: OPTIONS:
- bacteria
- genus
- larvae
- protozoa
Q: Answer the following question given this paragraph: Animal-like protists are called protozoa. Protozoa are single-celled eukaryotes that share some traits with animals. Like animals, they can move, and they are heterotrophs . That means they eat things outside of themselves instead of producing their own food. Animal-like protists are very small, measuring only about 0.010.5mm. Animal-like protists include the flagellates, ciliates, and the sporozoans. Q: Animal-like protists are called what? A:
Answer: protozoa

Problem:OPTIONS:
- acids
- proteins
- enzymes
- hormones

Answer the following question given this paragraph: Hormones control many cell activities, so they are very important for homeostasis. But what controls the hormones themselves? Most hormones are regulated by feedback mechanisms. A feedback mechanism is a loop in which a product feeds back to control its own production. Most hormone feedback mechanisms involve negative feedback loops . Negative feedback keeps the concentration of a hormone within a narrow range. Q: Because they control many cell activities - as well as being controlled by feedback mechanisms - what substances are very important for homeostasis? A:
****
A: hormones

Answer the following question given this paragraph: Q: What is the term for the most abundant species in a community, characterized by high competitive abilities? A:
OPTIONS:
- keystone species
- merging species
- carnivores
- dominant species
dominant species

Answer the following question given this paragraph: Most amphibians live in fresh water, not salt water. Their habitats can include areas close to springs, streams, rivers, lakes, swamps and ponds. They can be found in moist areas in forests, meadows and marshes. Amphibians can be found almost anywhere there is a source of fresh water. Although there are no true saltwater amphibians, a few can live in brackish (slightly salty) water. Some species do not need any water at all, and several species have also adapted to live in drier environments. Most amphibians still need water to lay their eggs. Q: Where do most amphibians live, salt water or fresh water? A:
OPTIONS:
- aquariums
- deserts
- saltwater
- fresh water

Answer: fresh water

input with options: Answer the following question given this paragraph: Homeostasis refers to the balance, or equilibrium, within the cell or a body. It is an organism's ability to keep a constant internal environment. Keeping a stable internal environment requires constant adjustments as conditions change inside and outside the cell. The adjusting of systems within a cell is referred to as homeostatic regulation. Because the internal and external environments of a cell are constantly changing, adjustments must be made continuously to stay at or near the normal proportions of all internal substances. This involves continual adjustments in transport of substances across the cell membrane. Homeostasis is a dynamic equilibrium rather than an unchanging state. The cellular processes discussed in the cell transport (passive and active transport) concepts all play an important role in homeostatic regulation. Q: What term means the adjusting of systems within a cell in order to restore balance or maintain equilibrium? A:
OPTIONS:
- systemic regulation
- aftertouch regulation
- gaseous regulation
- homeostatic regulation
output:
homeostatic regulation