5. which of these is an example of different
scales in system interactions?
a. a drought in an area causes farmers to
need to irrigate their fields.
b. decreased water levels in a lake lead to a
decreased population of fish.
c. a decreased amount of rain results in
decreased crop heights in a backyard
garden, leading to smaller produce.
d. the global atmosphere is warmer one
winter, leading to a decreased snow pack in
a mountain region, leading to a decreased
water level of a lake in the region in the
spring.

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

We can use solar powered cars or ride bikes instead of cars that burn fossil fuels