In ecological succession, one ecological community gradually changes into another more mature, or developed community. If the succession has to start after an ecosystem is completely destroyed, and soil must be remade, we refer to it as primary succession. If an ecosystem is damaged, but there
is still soil present, the plant life will regrow, in what is called secondary succession.
Put these steps in the proper order of ecological succession
= Molten lava flows during a volcanic eruption. As the lava cools, it hardens into bare rock.
= Lichens blowing in the air settles on the rock. Lichens releases acid that helps weather the rock and create thin soil
= Lichens add nutrients to the soil as they die and decay
= Mosses and ferns settle onto the thin soil and add to the soil when they die and decay. Insects and other small organisms move into the area,
= After many years, the soil is deep and has enough nutrients for grasses, shrubs and trees.
= Eventually, a climax community develops.

Scenario 5 1) take 10 red and 10 black beans and place them, mixed, on the table. record the starting phenotype # and frequencies (% of your total population) of your starting population in the table provided (generation 0). 2) act as a predator. “capture” as many organisms as you can until you have reduced the population to three organisms. put them aside. at this point, the predators die. 3) the remaining organisms each produce 2 clonal offspring. multiply your organisms accordingly and allow them to mix on the table. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 1). 4) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 2). 5) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 3).

In figure 1-2 what is the distance from point b to point c?

Which of the following observations darwin shape his concept of descent with modification? a) species diversity declines farther from the equator.b) fewer species live on islands than on the nearest continents.c) birds can be found on islands located farther from the mainland than the birdsê¹ maximum nonstop flightdistance.d) south american temperate plants are more similar to the tropical plants of south america than to thetemperate plants of europe.e) earthquakes reshape life by causing mass extinctions.