Answer: A. burning fossil fuels
B. metamorphism of limestone
C. volcanism
G. animal respiration
Explanation:
The carbon cycle is a biogeochemical cycle. In this, the carbon is exchanged among different spheres of the earth atmosphere, biosphere, geosphere, hydrosphere and pedosphere on planet Earth.
Burning of fossil fuels: The fossil fuels when burn releases carbon chemicals in the form of gases such as carbon dioxide and carbon monoxide.
Metamorphism of limestone: The metamorphism of limestone released carbon dioxide gas to the atmosphere.
Volcanism: Volcanism is an act of emergence of hot magma under the surface of the earth. Along with magma, the hot gases like carbon dioxide and carbon monoxide are also released which contribute to the carbon cycle.
Animal respiration: The animals when respire release carbon dioxide to the atmosphere as a metabolic byproduct.
You are given the half life of an isoptope which is 5.2yr and the numer of days that it will decay which is 30 months. You are required to find the initial mass of the isotope.
An = A0*exptaveln2/t1/2
30 = A0 exp^(30/12 * ln2/5.2yr)
A0 = 21.5grams
Answer:
Explanation:
——»To measure centimeters, we can use ruler.
- Use a ruler with the side marked either cm or mm. Align the edge of the object with the first centimeter line on the ruler, then find the length in whole centimeters, or the larger numbers on the ruler.
Any bridge is subject to three different types of forces: the dead load, the live load, and the dynamic load. The weight of the bridge itself is discussed in the first of these words.
<h3>What are the 4 different types of forces?</h3>
Any of the four fundamental forces in physics—gravitational, electromagnetic, strong, and weak—that control how objects or particles interact as well as how some particles decay—is referred to as a fundamental force, also known as a fundamental interaction.
<h3>What primary force is acting on the bridge?</h3>
Compression and tension are the two main forces that are ever-present on a bridge. A force that compresses or shortens the object it is acting on is known as a compressive force. A force known as tension or tensile force works to stretch or expand the object it is acting on.
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