Answer:
B. bradycardia
Explanation:
Bradycardia, also known as slow heart rate, is usually slower than 60 beats per minute.
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Answer: Geologists and other Earth scientists use geologic time scales to describe when events happened in the history of Earth. The time scales can be used to show when both geologic events and events affecting plant and animal life occurred. The geologic time scale pictured below (Figure below) illustrates the timing of events like:
Earthquakes.
Volcanic eruptions.
Major erosion.
Meteorites hitting Earth.
The first signs of life forms.
Mass extinctions.
Explanation:
<span>The two basic molds are: Expendable
mold and permanent mold. </span>
Molding is a
process where a rigid frame (mold) is being used to manufacture by shaping liquid
or pliable raw materials. However, molding is synonymous to casting; casting is
a process where a liquid metal is delivered into a mold which contains a hollow
cavity of the intended shape.
Expendable mold casting can be classify as
sand, plastics, plaster which make use of non-reusable or temporary molds while Permanent mold casting is a metal
casting process that use reusable molds.
Answer:
Sunlight and heat react with gases in the atmosphere.
Explanation:
Smog forms purely as a result of air pollution.
Gases released from machines on earth rise up the sky.
The risen gases then meet and react with the sun plus fine particles in the atmosphere, smog forms.
Smog causes a lot of problems on earth among them being:
- Accidents due to the blurry effect causedv by smog on roads thereby distructing drivers.
Answer:
In prokaryotes (organisms without a nuclear membrane), DNA undergoes replication and transcription and RNA undergoes translation in an undivided compartment. All three processes can occur simultaneously.
In eukaryotes (organisms with a nuclear membrane), DNA undergoes replication and transcription in the nucleus, and proteins are made in the cytoplasm. RNA must therefore travel across the nuclear membrane before it undergoes translation. This means that transcription and translation are physically separated. The primary transcript, heterogeneous nuclear RNA (hnRNA), undergoes extensive post-transcriptional processing to make a messenger RNA (mRNA)molecule that can pass through the nuclear membrane.
Explanation:
