Why does the author think that the time may now be right to focus on ocean research?
The space shuttle program has ended
. … Ocean research will cost less than the space program. Ocean researchers can learn from discoveries made in space.
Phillipe Cousteau’s main purpose for writing this commentary was
for we could take care of the ocean and explore it.
What does Cousteau mean when he says we also have the opportunity to course correct in our treatment of the oceans Why does he believe this is so important?
What does Cousteau mean when he says “we also have the opportunity to course correct” in our treatment of the oceans?
It’s not too late to stop polluting the ocean and clean up the pollution that is already there
. … There are still so many resources in the ocean left to discover.
The author belives that space exploration has overshadowed ocean exploration, and it’s time for that to change. Why does the author mention that the space shuttle program had “an estimated price tag of nearly $200 billion”? …
Because the ocean contains knowledge waiting to be discovered.
ANS: The author believes that
space research, while important, has diverted attention and resources away from exploring the oceans
. As evidence, he says that early exploration of the ocean’s depths was “quickly overshadowed by the race to the moon.” (lines 13–14).
What does Philippe Cousteau want you to realize after reading the commentary?
Philippe Cousteau’s commentary was entitled, Why Exploring the Ocean is Mankind’s Next Great Leap. In his commentary, he made me realize that
we need to further explore our oceans not only for scientific study purposes
but also for the benefit of society. We need to explore our oceans.
What evidence does Cousteau give to support his claim that we’ve only dipped our toes in the water of ocean exploration group of answer choices?
What evidence does Cousteau give to support his claim that “we’ve only dipped our toes in the water” of ocean exploration?
The ocean covers more than 70 percent of our planet. His grandfather co-invented the SCUBA system
. We’ve explored only about 10 percent of the ocean.
What is marine snow a source of?
Marine snow is mostly biological debris that originates from the top layers of the ocean and drifts to the seafloor, providing a primary source of
energy for animals in the deep ocean
.
Is marine snow a food?
In addition to dead animals and plants, marine snow also includes
fecal matter, sand, soot, and other inorganic dust
. … This continuous rain of marine snow provides food for many deep-sea creatures. Many animals in the dark parts of the ocean filter marine snow from the water or scavenge it from the seabed.
Can it snow underwater?
Our oceans do see ‘snow,’ but it is a very different beast underwater than the snow we see on land. … The term ‘marine snow’ is used for all sorts of things in the ocean that start at the top or middle layers of water and slowly drift to the seafloor.
What are two good things marine snow?
Professor Yager says, “marine snow is like falling leaves in the forest. It
carries food (produced by photosynthesis in the well-lit surface ocean) to the darker deep ocean
. It provides important food to the animals and microbes living in what we call “the twilight zone” (middle layers).
How fast does marine snow fall?
Sinking velocities of marine snow are mostly
greater than 50–100 m day
− 1
and may exceed 500 m day
− 1
(Alldredge and Gotschalk, 1989; Armstrong et al., 2009; Burd and Jackson, 2009; Engel et al., 2009; Fischer and Karakaş, 2009; Ploug et al., 2008; Shanks and Trent, 1980; Trull et al., 2008), raising the question of …
Why does most of the deep sea depend on marine snow not plants to start the food chain?
Marine snow often forms during algal blooms. … In this way marine snow may be considered the foundation of deep-sea mesopelagic and benthic ecosystems: As sunlight cannot reach them, deep-sea organisms rely heavily on marine snow
as an energy source
.
How deep does the ocean go down?
The ocean has an average depth of approximately 3.7 kilometres (or 2.3 miles). A calculation from satellite measurements in 2010 put the average depth at 3,682 metres (
12,080 feet
). However, only about 10% of Earth’s seafloor has been mapped to high resolution, so this figure is only an estimate.
Did it snow in the Sahara Desert?
Snow has fallen in the Sahara desert after temperatures dropped to -3C (27F)
. … The Sahara desert, which covers most of Northern Africa, has gone through shifts in temperature over the past few hundred thousand years – but snow and ice are still very rare.
What would we call a phytoplankton?
Phytoplankton, also known as
microalgae
, are similar to terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow. … The two main classes of phytoplankton are dinoflagellates and diatoms.
