interactions and eco-systems
plants for food and fibre
soil
structures and forces
planet earth
100
a series of interactions between biotic and abiotic thing in an area
what is an eco-system
100
how do plants make oxygen
what is photosynthesis
100
what is loam soil
what is a type of soil that is filled with minerals for plants and feels like moist cake
100
what are the four types of bridges
what is arch bridge, beam bridge, suspension bridge, and cantilever bridge
100
how many layers of the earth are there
what is 4
200
the name for something that is living
what is biotic
200
plants make there own food
True or false
what is true
200
what is clay soil
what is soil that is a light gray and when compressed turns into a tight ball
200
what internal force is this
what is shear
200
what are the 3 types of rocks
what are metamorphic, sedimentary, and igneous
300
the name for something non-living
abiotic
300
what is plowing
what is ripping up the soil so it can "air out" and have more oxygen for the next crops
300
what is sandy soil
what is soil that is very dry and does not compress and falls apart easy
300
what is the strongest bridge
what is an arch bridge
300
what does igneous mean
what is fire
400
what is it called when two biotic things collaborate with each other
what is symbiosis
400
what are the 2 'super crops'
what are corn and wheat
400
what type of soil has the most plant nutrition
what is loam soil
400
what internal force is this
what is compression
400
which type of rock is formed from heat and pressure
what is metamorphic
500
what is the form of symbiosis where one thing is benefited where another is not benefited or harmed
what is commensalistic symbiosis
500
what is irrigation
what is using special machinery to water crops when they're to dry
500
what soil can be easily molded when wet
what is clay soil
500
how many internal forces are there
what is 4
500
what layer of the earth is the smallest
what is the crust