During the Ediacarans» latter days, the first
tiny organisms with calcified shells began to populate the oceans.
Not exact matches
All an evolutionary storyteller has to do is to start
with the apparently simplest version, ignore the neural equipment that has to be present for an
organism to make any use of a «photon receptor,» and spin a charming tale about how a
tiny primitive light - sensing cell might grow up to be a full - fledged eye.
These
tiny, essential life - forms make up communities called microbiomes, in which microorganisms interact and trade services
with each other and their host
organisms.
Replacing the
tiny organisms» silica shells
with more useful material could open the door to miniature devices based on natural designs
On one hand, the
tiny plastic fragments often accumulate contaminants that, if swallowed, can be passed to
organisms during digestion; without forgetting the gastrointestinal obstructions, which are another of the most common problems
with this type of waste.
«This is particularly important when you want to look at a species» ability to cope
with change,» said Jennifer Pistevos, a master of research student at the Marine Biological Association, who studied clone populations of Celleporella hyalina, a
tiny organism she found to have an amazing ability to reproduce in both more acidic and warmer water conditions.
In the 1980's, a seminal paper by Duke colleague Tom Petes demonstrated recombination could occur across the centromeres in Saccharomyces cerevisiae, but some attributed the finding to a quirk of the favored model
organism with its
tiny point centromeres.
Today such clay minerals form in soil when
organisms such as microbes or fungi interact
with tiny bits of weathered rock.
Atri argues GCRs could reach the Red Planet's surface
with enough energy left to power a
tiny organism.
Combining genetic material can of course bring beneficial new combinations, but even for
tiny organisms that are barely visible to the naked eye, mating is fraught
with all kinds of hazards, such as a long wait for offspring, sexually transmitted diseases, and the risk of getting eaten during or after sex.
These
tiny organisms account for about 10 % of all photosynthesis on Earth, which forms the base of the food chain and provides the atmosphere
with oxygen.
It's a canister smaller than a hockey puck loaded
with little
organisms — bacteria, plant seeds, even some
tiny invertebrate animals called water bears.
What is emerging from the research is that Antarctica is a far more dynamic place than anyone could have imagined a century ago — and that what happens there can have dramatic consequences for millions of people around the world.Now, instead of mapping new geographical discoveries, scientists are seeking to map the inner workings of the strange forces at play in Antarctica, from the biological mechanisms that allow
tiny organisms to seemingly awake from the dead, to the little - understood forces that are gnawing away at the continent's ice —
with increasing vigor.
Lennart Bach, marine biologist at GEOMAR Helmholtz Centre for Ocean Research Kiel investigates a
tiny organism that can hardly be seen
with the naked eye — and is still visible from space.
Billions of planktonic
organisms, too
tiny to be seen
with the naked eye, make this valuable service possible: When carbon dioxide from the atmosphere dissolves in seawater, various species convert it to organic carbon and other organic components during photosynthesis.
The rain then interacts
with silicate - rocks and forms carbonate rocks in the silicate weathering process — or, in a planet that is so filled
with life as ours,
tiny organisms can grab the carbon - dioxide dissolved in the ocean to build shells or coral reefs.
A geomicrobiologist — someone who studies how
tiny organisms affect or use minerals — recently studied the rusty water and came up
with some surprising results.
A well - known issue
with LGM proxies is that the most abundant type of proxy data, using the species composition of
tiny marine
organisms called foraminifera, probably underestimates sea surface cooling over vast stretches of the tropical oceans; other methods like alkenone and Mg / Ca ratios give colder temperatures (but aren't all coherent either).
Along
with other
organisms, the BUM showed fascinating shots of
tiny corals kissing, fighting and dancing on the seafloor.
Understanding the biomechanics of this little snail could help engineers design some nifty sea - faring robots, and it could also help
with ecological studies: Zooplankton like helicina move upwards to the surface of the ocean each night to eat (and avoid being eaten), and this mass migration of
tiny organisms is one of the biggest biomass movements on the planet.
There's really nothing to be grossed out about when thinking of sharing your body
with these
tiny organisms.
In my opinion, teachers have the responsibility to provide students
with the knowledge, skills and attitudes to plan a desirable future for humanity and to protect all the other living
organisms that that have evolved
with us on this
tiny blue marble in space.
Turtle grass beds
with their unique collection of
tiny organisms flourish in patches adjacent to the northern and southern shores.
Plankton, the
tiny organisms at the bottom of the ocean food chain that so much of marine life depends on, drift
with the ocean currents, but sometimes come together in dense patches under the surface that can later rise to the surface as red tides.
Plant growth on land fluctuates
with the seasons; so does the blooming of phytoplankton —
tiny plant - like
organisms in the oceans.