answers already passed 2025/2026
Why is the expected loss of Red Sea's "super corals" bad news for coral conservation elsewhere? -
correct answer ✔They have proved to be resilient to climate change while other corals haven't and
there is a possibility that they could be transplanted to other parts of the world. If they die, then that
possibility goes out the window.
Origin of much of Earth's present-day water is - correct answer ✔Asteroids from the outer solar
system. This is because comets, made mostly of ice and dust, came crashing into Earth.
What is Biosphere II? Briefly describe its original concept and present status - correct answer ✔It was
designed to explore the web of interactions within life systems in a structure with different areas based
on various biological biomes. Present day, it is used as a center for research, outreach, teaching, and
lifelong learning about Earth, its living systems, and its place in the universe.
Name one select combination of Ecosystem Status and Trend that is still unquantified (Table 1) and one
set of Tipping Element -Pressure-Threshold combo (Table 2) that you consider to be important for the
health of the oceans - correct answer ✔One trend that I think is important for the health of the oceans
is the reduction of biodiversity, particularly the endemic to polar regions because it will destroy crucial
pieces of the ecosystem that we won't be able to get back. Something else that I think is important is
coral loss due to ocean warming since it has risen 2 degrees C over the 1990s. Coral is a crucial piece of
the ocean ecosystem where a lot of fish and other life is sustained due to the coral. So when they die,
the ecosystem suffers.
Antarctic and arctic environments have the following in common: - correct answer ✔Ice as a source of
algal production and deposition on the seafloor
T/F
A well-developed microbial community is present in polar ice that resembles the "Microbial Loop" found
in open waters. - correct answer ✔True