The carbon cycle is nature’s mechanism of recycling carbon atoms, which flow from the atmosphere to Earth’s creatures and then back into the atmosphere. The majority of carbon is held in rocks and sediments, with the remainder held in the ocean, atmosphere, and living creatures. Carbon cycles pass via these reservoirs, also known as sinks. The ocean acts as a massive carbon sink, absorbing carbon. Carbon is produced by all marine species, from marsh plants to fish, seaweed to birds, as they live and die. Dead creatures can sometimes be converted into fossil fuels, which are then burned, emitting CO2, and the cycle repeats.
For ages, humans have disrupted the biological carbon cycle by altering land use, and more recently, by extracting fossil carbon from the geosphere on an industrial scale (coal, petroleum and gas extraction, and cement manufacturing). By 2020, carbon dioxide levels in the atmosphere had risen over 52 percent over pre-industrial levels, pushing the Sun to heat the atmosphere and the Earth’s surface even more. Due to dissolved carbon dioxide, rising carbon dioxide has raised the acidity of the ocean surface by around 30%.
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west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.