The biodiversity in the marine reef ecosystem of the Great Barrier reef in Australia, Queensland has declined due to the increase of crown of thorns star fish. The increase of the starfish is caused by run off during the monsoon season via by fertilizers from agriculture. As a result, the overall population of corals has declined by 25% from the starfish in the last 30 years. The decline of corals will decline the population of other species such as fish and will have a negative affect on other species.
Organisms with hard parts such as a shell,or bones are much more likely to become fossilized than animals with soft parts like a worms.
Answer;
10 seconds
The maximum interval for pausing chest compressions is 10 seconds.
Explanation;
Compressions should be done at a rate of 100 to 120 compressions per minute at a depth of about 1.5 inches for infants, about 2 inches for children and at least 2 inches but no greater than 2.4 inches for adolescents.
The maximum interval for pausing chest compressions is 10 seconds.
Earth is comprised of atmosphere, hydrosphere and lithosphere.
Explanation:
The earth is comprised of three system which is present in solid, liquid and gas they are lithosphere, hydrosphere and atmosphere. Combination of all three sphere is known as biosphere where life exist. Lithosphere is defined as the area of earth which is solid in nature, it is comprised of land part of the earth.
Hydrosphere is defined as the area of earth which is liquid in nature, it is comprised of all the water bodies present in the earth. Atmosphere is defined as the area of earth which is gaseous in nature; it is comprised of air in the earth. The first life originates in the water. The combination of all three is known as biosphere.
The correct option is (b) RCHO
The general formula for an aldehyde is RCHO.
<h3>What is an aldehyde?</h3>
- An organic molecule with the functional group RCH=O is known as an aldehyde. The functional group alone (without the "R" side chain) can be categorized as a formyl group or as an aldehyde.
- Aldehydes are widespread and have significant functions in both the technological and biological worlds.
- Aldehydes have a carbon center attached to oxygen via a double bond, hydrogen via a single bond, and a third substituent—usually carbon or, in the case of formaldehyde, hydrogen—by a single bond. It's common to refer to the center carbon as being sp2-hybridized. Aldehydes belong to a polar category.
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