What is the singular tense of bacteria?
bacterium
What does it constitute?
a large domain of prokaryotic microorganisms
How many cells are in a gram of soil?
40 million
and in a millitre of fresh water?
a million
Do they have different shapes?
yes
what kind?
spheres to rods and spirals
Can you find it most places?
yes
like what?
soil, water, acidic hot springs, radioactive waste, and the deep portions of Earth's crust.
anywhere else?
symbiotic and parasitic relationships with plants and animals.
anywhere else?
in manned spacecraft.
HAve they been around a while?
among the first life forms to appear on Earth
What happened in 2013?
\researchers reported data that suggested bacterial life forms thrive in the Mariana Trench
what was the depth?
up to 11 kilometres
Is that a shallow part?
no
what is it?
the deepest part of the Earth's oceans.
Where else can they thrive?
inside rocks
where are they?
580 metres below the sea floor under 2.6 kilometres of ocean
What are bacteria vital in?
recycling nutrients,
What is dependent on bacteria?
stages in nutrient cycles
such as?
the fixation of nitrogen from the atmosphere and putrefaction