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Margaret [11]
3 years ago
9

The problem that scientist had with seafloor spreading is what

Biology
1 answer:
raketka [301]3 years ago
4 0

When new oceanic crust is made, it spreads out, taking up space. Scientists did not understand how new crust was not increasing the size of Earth.

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In which of the following ways are bacteria similar to birds
pentagon [3]

Answer:

They both use DNA as their genetic material.

Explanation:

Bacteria are simple prokaryotic organisms which lack membrane bound organelles. On the other hand, birds like higher organisms are eukarotyotic organisms with proper membrane bound organelles. Other than this that both bacteria and birds are living organisms,  one way in which bacteria and birds are similar is that they both have DNA as genetic material which they pass to their offspring. Although in the case of bacteria there is no variation is offspring however in case of birds there can be because genetic shuffling takes place and offspring is not an exact replica of parents while in case of bacteria they are.

Hope it helps!

3 0
3 years ago
Looking at the Punnett square, list the possible phenotypes and frequencies of
liubo4ka [24]

Answer:

Phenotypes:

Aa with a frequency of 2

aa with a frequency of 2

The children have equal chances of having aa or Aa

5 0
3 years ago
Complete the sentence.
SCORPION-xisa [38]
<span>B. es
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We use "es" to refer where someone is from.
5 0
4 years ago
Read 2 more answers
Reptiles are better suited to dry land than their amphibian ancestors because
Vaselesa [24]

Answer:

<u><em>All of the above.</em></u>

Explanation:

1. Their watertight skin minimizes moistures loss: <em>Reptiles have a reputation that they are “slimy” when we touch and hold them; however, they have dry skin, which has even fewer glands than mammals or amphibians. The main special feature of their skin is that the epidermis is heavily keratinized with a layer, which also prevents water loss.</em>

2. Amphibians must lay eggs in water or in moist soil to reduce moisture loss: <em>Because amphibian eggs don't have an amnion, the eggs would dry out if they were laid on the land, so amphibians lay their eggs in water.</em>

3. Reptile egg shells are harder than amphibians' eggs: <em>Reptile eggs are coated with a leathery or brittle coating, and the animals that hatch from them are miniature versions of the full-sized animal parent. In contrast, amphibian eggs are transparent and jelly-like. The animals that hatch from them still must go through metamorphosis.</em>

<u><em>Hope this helps you have a better understanding:) !!</em></u>

7 0
2 years ago
Marie Curie was a famous French-Polish scientist known for her pioneering research on radioactivity. Her work not only brought h
Liula [17]

Answer:

because of continous radiation exposure, bone marrow got destroyed and the ability to produce immunity is reduced

granulocytes

monocytes

nk cells

etc

3 0
3 years ago
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