1. most nonmetals are
a. brittle
b. good conductors
c. metalloids
d. shiny
2. elements in an element family have similar
a. atomic symbols
b. atomic sizes
c. atomic weight
d. chemical properties
3. what is a food chain?
a. A long chain made of food
b. process of preparing food
c. Food where locked by chain
d. pathway that energy and nutrients flow through the ecosystem
4. why organisms in food chains are grouped into categories
a. to form community
b.to share the energy
c. To form trophic levels
d. To get more energy
5. what role human plys in food chain?
a. Producers
b. consumers
c. humans do not involve in food chain
d. decomposers
6. carbon and other nonmetals are found in which area of the periodic table?
a. on the left most side
b. on the right side
c. in the middle column of the periodic table
d. in the bott om rows
7. why do all food chains Start with plants?
a. because plant are easily grown
b. because plant are nutritious
c.because plant can produce its own energy
d.because plant do not require energy
8. food chains are often used in ecological modeling.
a. true
b. false​