Unicellular Organisms
The gas plants and algae use in photosynthesis.
Carbon Dioxide
The force that keeps the Earth in orbit around the Sun.
Gravity
The movement of weathered rock fragments.
Erosion
The four bases found in DNA are represented by these letters.
A, T, C and G
The distance light travels in one year.
Light year
The process where microorganisms break down dead organisms.
Decay
The gravitational field strength on Earth.
9.8 or 10 N/kg
When rocks rub against each other and wear away.
Abrasion
The shape formed by the two strands of DNA.
Double helix
True or False: Environmental variation can be passed to offspring.
False
The difference between aerobic and anaerobic respiration.
Aerobic uses oxygen; anaerobic does not.
The name of our galaxy.
The Milky Way.
Small bits of rock carried by rivers or wind.
Sediment
The base that pairs with guanine.
Cytosine
The name of a single-celled organism that has no nucleus.
Bacterium/ Prokaryote
The type of reproduction bacteria use.
Binary Fission
Anything that orbits a planet, like the Moon or artificial _______.
satellite
A slow-moving river of ice that can carry large rocks.
Glacier
This term describes the variety of species in an ecosystem.
Biodiversity
Identical twins may look different over time because of this type of variation.
Enviornmental Variation
The two products of anaerobic respiration in yeast.
Carbon dioxide and ethanol
The shape of the orbits of planets according to Kepler.
Elliptical (oval-shaped)
A type of rock formed by heat and pressure.
Metamorphic
A variation caused by surroundings, such as amount of sunlight or diet.
Environmental variation
The kind of rock is formed from lava cooling quickly on Earth’s surface.
Extrusive igneous rock