Q: Fact 1: Having no natural predators increases population size. Fact 2: Koalas have no natural predators. Given the two facts above, what has an increased population size over time?

OPTIONS:
- trout
- dolphins
- squids
- Frogs
- dodos
- koalas
- white lions
- Tasmanian tigers

A: koalas

Q: Fact 1: Cells vary in size as well as shape, but all cells are very small. Fact 2: All cells are microscopic in size. Given the two facts above, cells pretty much al share this one characteristic:?

OPTIONS:
- sensory neurons
- voltage
- aerobic capacity
- microscopic
- eukaryotic
- bacteria
- prokaryotic
- layers of fat

A: microscopic

Q: Fact 1: Aglacier causes mechanical weathering. Fact 2: Pysical weathering is the mechanical breakdown of rocks. Given the two facts above, what do glaciers do to rocks?

OPTIONS:
- form them
- melt them
- protect them
- storing water
- throw them
- It expands
- Water expanding
- break them down

A: break them down

Q: Fact 1: The Himalayas were formed by rock folding. Fact 2: Folding A fold is a bend in the rock layers. Given the two facts above, what had to bend to form the Himalayas?

OPTIONS:
- bamboo
- smaller mountains
- an object
- light
- rock layers
- graptolites
- four limbs
- sediment

A:
rock layers