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3 years ago

Has earth ever been covered completely by snow and ice

Biology

2 answers:

sveta [45]3 years ago

6 0

The answer is D.
there is no evidence of any time that the earth was covered with ice or snow

Vlada [557]3 years ago

5 0

D is incorrect.

My guess: C) Probably, during the last glacial maximum

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Help me with this picture please

Ira Lisetskai [31]

Diameters in meters:

Sun 1,391,000,000 m
Mercury 4,879,000 m 
Venus 12,104,000 m 
Earth 12,756,000 m 
Mars 6,794,000 m 
Jupiter 142,984,000 m 
Saturn 120,526,000 m 
Uranus 51,118,000 m 
Neptune 49,528,000 m

Ratio: $\frac{10}{1,391,000,000} =7.2\times 10^{-9}$
Multiply each planet by $7.2\times 10^{-9}$ to get the diameter in meters.

Mercury 4,879,000 m × $7.2\times 10^{-9}$ = 0.035704 m = 37.7 mm
and so on...

8 0

3 years ago

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Match each planet to an accurate characteristic. mercury.

Brums [2.3K]

Answer:

Mercury: It has very little atmosphere

Venus: It barely spins on its axis

Earth: It has an abundance of liquid water

Mars: It has 2 moons.

Explanation:

3 0

3 years ago

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Someone help me? look at the image look at the image look at the image look at the image

grin007 [14]

Isolated on its own, bloodplasma is a light yellow liquid, similar to the color of straw. Along with water,plasma carries salts and enzymes. The primary purpose of plasma is to transport nutrients, hormones, and proteins to the parts of the body that need it.

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White blood cell. ... White blood cells(also called leukocytes or leucocytes and abbreviated as WBCs) are thecells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.

Platelets are tiny blood cells that help your body form clots to stop bleeding. If one of your blood vessels gets damaged, it sends out signals that arepicked up by platelets. The plateletsthen rush to the site of damage and form a plug, or clot, to repair the damage.

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3 years ago

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Describe how a measurement can be accurate but not precise?

morpeh [17]

You can have error both human error i.e eye balling a measurement to what looks close. and then you have inherent error the error that is already in the equipment i.e a 2 scales one can give a measurement of x when set to zero and if put it on a second scale you could get a measurement of y when set to zero because of calibration gravity etc things you cant control

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3 years ago

Define the terms phenotype and genotype, and describe the relationship between them

Roman55 [17]

Genotype

DEFINITION

IT IS THE GENETIC MAKEUP OF THE CELLS.

Phenotype

DEFINITION

IT IS PHYSICAL APPEARANCE OF ORGANISMS.

The Genotype, carried by all living organisms, holds the critical instructions that are used and interpreted by the cellular machinary of the cells to produce the r Phenotype of the organism.

Thus, all the physical parts, the molecules, cells and other structures, are built and maintained by cells following the instructions give by the genotype.

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3 years ago

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