(fill in the blank) word bank: radiation, accumulate, genetic drift, DNA

1: Helpful variations may in a population, while unfavorable ones may disappear.
2: , a mechanism of evolution, is a random, directionless process.
3: Mutations can occur when an organism is exposed to
4: Mutations may be the result of damage to a cell's

(write the answer)

#1: How do environmental factors contribute to evolution?
#2: How could 2 species, that compete for the same resources, affect each others' evolution?

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water