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3 years ago

How do fronts change weather?

Biology

2 answers:

Romashka-Z-Leto [24]3 years ago

3 0

Explanation:

When a front passes over an area, it means a change in the weather. Many fronts cause weather events such as rain, thunderstorms, gusty winds, and tornadoes. At a cold front passes there may there may be dramatic thunderstorms. At a warm front there may be low stratus clouds.

LenKa [72]3 years ago

3 0

Answer:

When there is a transition zone between two different air masses at the Earth's surface.

Explanation:

Each air mass has unique temperature and humidity characteristics. Often there is turbulence at a front, which is the borderline where two different air masses comes together. The turbulence can cause clouds and storms. Instead of causing clouds and storms, some fronts just cause a change in temperature.

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The ancestors of mammals diverged from ancient

wariber [46]

Answer:

The ancestors of mammals diverged from ancient synapsids (reptiles).

Explanation:

The mammals have known to be evolved from a group of reptiles. These group of reptiles were known as synapsids. In fact, some scientists consider mammals as the only living synapsids. The close relativity between reptiles and mammals can hence be seen because they have common ancestors. The synapsids were known to inhabit the earth during the Permian Period.

The scientists, however, do not know from which reptiles exactly did the first mammals grow.

7 0

3 years ago

Analysis of the second swab has confirmed that the causative organism is Streptococcus pyogenes, a gram-positive organism. Imagi

Alisiya [41]

Answer:

D. purple, spherical-shaped organisms arranged in chainlike formation

Explanation:

Streptococcus pyogenes is a gram positive coccus. Coccus implies that it has a spherical shape.

Gram positive organisms like streptococcus pyogenes take up purple stain on gram staining whereas gram negative organisms like E. coli take up pink stain on gram staining.

Further more, streptococcus pyogenes is arranged in chains or pairs. Unlike staphylococcus which is arranged in clusters.

Coming back to answer choices,

A. pink, rod-shaped organisms arranged in pairs

It is the incorrect choice as Streptococcus pyogenes is gram positive and they appear blue on gram staining.

B. purple, spherical-shaped organisms arranged in grapelike clusters

This is the incorrect choice. Although Streptococcus pyogenes appears blue on gram staining but it is arranged in chains like a beaded necklace. Purple, spherical-shaped organisms arranged in grape-like clusters is typical appearance of Staphylococcus.

C. pink, spherical-shaped organisms arranged in chainlike formations

It is incorrect as Streptococcus pyogenes appears blue on gram staining as it is gram positive.

D. purple, spherical-shaped organisms arranged in chainlike formation

This is the correct choice and describes typical appearance of Streptococcus pyogenes.

6 0

3 years ago

ASAP- discovery of a series of fossils of human-like skulls, all slightly different from each other and from us, dating from thr

Hatshy [7]

D. Disruptive selection

5 0

3 years ago

Which of the following make mechanical obstruction of the intestinal lumen of the small or large bowel an acute emergency?

Julli [10]

Distention from accumulating gas and fluid impede venous return, leading to bowel wall ischemia.

Explanation:

When the bowel lumen is obstructed, the gases and fuids starts accumulating as a repose to the obstruction. The accumulated fluid and gases results in the swelling or enlargement. This will result in the production of electrolytes and water inside the mumen that is in obstruction. The wall of the bowle will also enlarge and becomes swollen.

As more and more fluid and gas gets accumulated in the bowel, the bowel wall will be enlarged and as there is an increase in the pressure due to this accumulation, the fluid starts to leak from the wall. This will enter peritoneum and necrosis. This will result in an acute emergency when it becomes serious.

7 0

3 years ago

What is the number one determining factor in the types of organisms that can live in a body of water?

harina [27]

The answer is Salinity.

7 0

4 years ago