Secession is a gradual process within an ecosystem in which some species replace other species. When a volcano creates a brand new island on rock and then plants start growing to grow this is an example of what?

The Endangered Species Act (ESA) of 1973 has helped to slow the destruction of habitat and the loss of species in the United States.  There are now many success stories of animals/plants that were on the edge of extinction and now are returning.  Even with the success stories there are many who criticize ESA. I want you to give at least 2 examples (with explanation) that show the success and need for The Endangered Species Act. And give 2 reasons why ESA is still criticized after all these years.

Ernie's school has three greenhouses, located in three parts of the school. Ernie notices that the plants in one greenhouses are smaller than the same species in the other greenhouses. Ernie's biology teacher says she has been having a problem recently with growing plants in this particular greenhouse. Ernie's lab group decides to investigate factors such as light levels, temperature, and soil nutrients in the three greenhouses. They find that these are the same for all the rooms. What additional factors would you suggest testing for, and how would each of these factors affect the growth of plants? 20

Which of the following terms best describes the biological scenario where species that look similar in allopatry look different in sympatry?   a. Character displacement   b. Tempo   c. Fusion   d. Post-zygotic barriers

Imagine you are a botanist. Below are characteristics of a never-before described plant species recently identified as part of the ‘All Taxa Biodiversity Inventory’ (ATBI).Organism 1Field Notes: Specimen collected from rocks on bank of streams from the Adirondack Park (NY). Plant growth form is more ‘prone’ than upright (plant seems to have little support).Laboratory Analysis:Body: Consists of three regions: light brown anchoring tissue (base of plant); Green vegetative area (middle of plant); Brownish-green, stalk-like structure bearing capsule at end (top of plant).Size: 8 cm in lengthChromosomal Analysis: Bottom two thirds of plant is haploid (chromosome # 10), while top third of plant is haploid (chromosome # 20).Lignin test: NegativeCuticle: PresentLeaves: Absent, though they do possess green photosynthetic structures. Contains chlorophyll a, b; B-carotenes; xanthophylls.Roots: Absent, though they do possess anchoring (possibly absorptive) structures.Stem: Absent, though they do…

A new species of toad is introduced into a region in a shipment of fruit, survives, and manages to start breeding. How could you determine whether the toad was an invasive species? You would need to determine whether it started breeding with native species. You would have to see if it was present over a large region or if it stayed in one location. All nonnative species are invasive species. O You would need to watch over time to see if it had a negative effect on other species. As it is now breeding in the area, it would be considered native and not invasive.

Of the 50,000 species introduced into the United States, half are plants. Describe two ways in which non-native plants might be brought to a new environment. How might we help prevent non-native plants from establishing in new areas and posing threats to native communities?

How can you use your data to discourage or promote logging of natural forest for human consumption? If logging activities cause decline of species diversity, what alternatives do you propose to maintain the tree species diversity in natural forests?