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Zigmanuir [339]
3 years ago
11

What is the smallest unit of geologic time? A. Era B. Epoch C. Eon D. Period

Biology
2 answers:
kolezko [41]3 years ago
6 0
<span>The smallest unit of geologic time is epoch.</span>
DedPeter [7]3 years ago
3 0
<span>The most appropriate answer is b. Epoch. An epoch is a unit of geologic time that is smaller than a period. The largest divisions are called eras. Eras are then divided into periods. Examples of epochs include the Holocene, Eocene and Miocene. We are presently in the Holocene Epoch. </span>
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Disscus the importance of phytoplankton to the composition of the earth's atmosphere?​
Evgesh-ka [11]

Answer:

Phytoplankton are essential for atmospheric and climate regulation.

Explanation:

Phytoplankton are autotrophs, they use solar energy, along with inorganic carbon and water to produce their own food source via photosynthesis. During photosynthesis, they also produce oxygen, integral for the planet's atmospheric composition.

At their large biomass, phytoplankton contribute to a majority of the oxygen used by consumers (most animals).

             6 CO2 + 6 H2O + light  →  C6H12O6 + 6 O2

Carbon Dioxide + Water + Light       Glucose + Oxygen

Along with fossil fuels, human agricultural practices have contributed large amounts of CO2 to the atmosphere, This causes global warming, a major environmental crisis- global warming also leads to landmass loss, biosphere disruption and reduces biodiversity in mass extinction events.

Phytoplankton carbon cycling produces organic matter which functions as carbon sinks in our oceans. Thus, as phytoplankton use large amounts of CO2, they help combat warming cycles, along with producing O2 in atmospheric and climate regulation.

6 0
2 years ago
Why does the amount of heat received by places far from the equator become less?
Ainat [17]
If the Earth were a disk with its surface perpendicular to the rays of sunlight, each point on it would receive the same amount of radiation. <span> However, the Earth is a sphere and aside from the part closest to the sun, where the rays of sunlight are perpendicular to the ground, its surface tilts with respect to the incoming rays of energy with the regions furthest away. Hope this answers the question.</span>
7 0
3 years ago
Researchers selected candidate genes by identifying homozygous tracts shared by all three siblings. along with the parental phen
Kruka [31]

Researchers selected candidate genes by identifying homozygous tracts shared by all three siblings along with the parental phenotype, this type of study is applied for the inheritance of recessive genes. Since the recessive genes can not be expressed in heterozygous genotype, the back tracking of carriers and homozygous recessive individual will help understand its inheritance pattern. The inheritance of dyt2 can be autosomal recessive. It is usually passed on to progeny of two carriers.

5 0
3 years ago
En coding the phrase " ruptured aneurysm of carotid artery, extracranial portion," the main term to reference in the index is __
gogolik [260]

The main term of reference in the index is  Aneurysm

Extra cranial carotid artery aneurysms ruptures when the blood clots are formed in them.  The term  aneurysms is a disease  that is happening due to the weakness in the wall of artery. The weakened arteries widens out or swells.

3 0
3 years ago
2
jeka57 [31]

Answer:

Either (1.) Fossils or (2) Radiometric dating.

Explanation:

Fossils are an obvious answer to this, but radiometric dating is the method most scientists use to find the age of rocks. Radioactive isotopes break down predictably, so the farther along this process is, the older the rock is.

3 0
2 years ago
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