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LuckyWell [14K]
2 years ago
6

Where on earth did life first begin?

Biology
1 answer:
aalyn [17]2 years ago
3 0

Answer:

As of 2017, microfossils (fossilised microorganisms) within hydrothermal-vent precipitates dated 3.77 to 4.28 Gya in rocks in Quebec may harbour the oldest record of life on Earth, suggesting life started soon after ocean formation 4.4 Gya during the Hadean Eon.

Explanation:

brainliest plsssssssss

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When 238u92 becomes , 234Th90 what type of decay has taken place?
ruslelena [56]

Answer: alpha

Explanation: Alpha particles are fast moving streams of positively charged particles that are shown to be Helium nuclei. They have a mass

number of 4 and an atomic number of 2 and a charge of +2. Alpha particles are represented as 4He2. When 238U92 becomes 234Th90, it emitted a helium nucleus 4He2. The equation for the decay is 238U92 ---> 234Th90 + 4He2.

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A thermostat set to 62°F turns on the furnace when a house cools below that temperature, and shuts the furnace off when a house
Leno4ka [110]

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It is a negative feedback loop.

Explanation:

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Relate the temperature of a gas to the kinetic energy of its particles.
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Compared to other routes of administration, ________ is the most complicated way for a drug to enter the bloodstream.
Dmitry_Shevchenko [17]

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2 years ago
One method is to microinject ____________ into eggs; another method is to use ____________ to create tiny holes in the eggs thro
Elina [12.6K]

One method is to microinject deoxyribonucleic acid (DNA) into eggs; another method is to use vortex mixing to create tiny holes in the eggs through which DNA enters.

<h3>Process of gene transfer</h3>

Genetic engineering techniques are steps that are taken to create a genetically modified organism that can be used for studies. This technique involves the following major steps:

  • Isolation of DNA fragments from a donor organism,

  • The insertion of an isolated donor DNA fragment into a vector genome; and

  • The growth of a recombinant vector in an appropriate host.

The insertion of an isolated donor DNA fragment into a vector genome can be done through microinjection method or vortex mixing.

When eggs are used as vector genome, microinjection of DNA can be carried out or vortex mixing can be used to create tiny holes in the eggs through which DNA enters.

Learn more about DNA here:

brainly.com/question/21265857

6 0
2 years ago
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