expansion amounts for 50 cm of each of the solids:

brass alloy: 0.11 cm
aluminum: 0.07 cm
iron: 0.12 cm
steel alloy: 0.04 cm

each strip of metal was the same thickness and was heated to 100°c.

based just on the data, which conclusion can be drawn?
a) metals expand upon heating.
b) alloys expand less upon heating than elemental metals.
c) alloys expand more upon heating than elemental metals.
d) the rate of expansion of metals is directly proportional to the temperature to which it is heated.

9. wind power creates pollution. water air soil noise

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-