The city of shanghai is near what river mouth

Why are ecologists unsettled on whether or not any truly commensal interactions among organisms?

beks73 [17]

Ecologists are unsettled on whether or not any truly commensal interactions among organisms take place or not because it depends on the kind of organisms. When a bird makes a nest in a tree and lays eggs, the eggs are definitely safe. This procedure does not harm the tree directly, but it can stop the sunlight from reaching some parts of the tree. This actually shows that the bird has benefited from the situation but the tree has lost out.

4 0

2 years ago

Is earth a part of a large physical system that contains other planets, moons and stars?

Strike441 [17]

-- Earth is one planet is a "Solar System", that consists of everything
that's gravitationally hooked to the Sun ... one star. This system contains
7 other other significant planets, more than 100 of their moons, and huge
numbers of comets, asteroids, dwarf planets, and countless bodies in a
giant shell that are so small and so far away that we can only see a few
of them so far. Every one of these items orbits the sun. The ones that
are farthest out may take thousands of years to complete one orbit.

That's the 'kingdom' of ONE star ... the sun.

-- It's very likely that there are similar gatherings of different-size objects
around MOST stars ... maybe ALL stars. Those objects are tremendously
difficult for us to see. We're just beginning to be able to see the most massive
planets that go with other stars, and already, something like a thousand of them
have been discovered. We know that they're there, but we can't see things like
their actual size or surface markings yet.

-- Stars are clumped in gatherings of several billion, called 'galaxies'.
Our sun is one of an estimated 300 to 400 billion stars in one galaxy,
which we call the "Milky Way Galaxy".

-- Astronomers estimate that there are billions of other galaxies.

So there are billions of billions of other stars, and most of them may
have several planets.

That's an awful lot of OTHER physical systems out there, that contain
other planets and moons.

Having trouble wrapping your mind around all of that ? Don't worry,
you're not the only one. It's easy for us to talk about it, but impossible
for our minds to actually understand it. It's just too big.

6 0

2 years ago

Identify the layer of Earthâ€™s atmosphere where the circulation and mixing of liquids and gases produce weather.

Stels [109]

The layer of Earth's atmosphere where the circulation and mixing of liquids and gases produce weather through the turnaround and mixing of the liquids and gases is known as the troposphere

The troposphere is the layer of the Earth's surface where the formation of weather takes place and is the place where the air turns over as there is a mixing of liquids and gases which precipitates and forms.

Weather can come in different forms such as:

Sunny
Cloudy
Rainy
Windy
Snowy, etc