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BartSMP [9]
2 years ago
14

There are two basic ideas that are key to Darwin's Theory of Evolution. The first is that present day species are descendants of

ancient ancestors, called "Descent with Modification" the second is _____
Biology
1 answer:
Svetradugi [14.3K]2 years ago
7 0

Answer: Natural selection is the driving force to explain the mechanisms  of  evolution.

Explanation:

◼In a given population Organisms usually produce more offspring than what the environment can support.  

◼ VARIATION, is driving force  for  the manifestation of  sustainable inheritable characteristics from parents in a given population.

◼ Organisms, who acquired certain characteristics from variation; tend to survive than others, and therefore pass these inheritable characteristics to their offspring.

◼There is competition for the available resources among the offspring which leads to a stable population in size after a period of time.

◼Darwin deducted that, variants of best adaptation will be selected for by natural conditions operating in the environment of the population at that particular period (natural selection).Therefore natural selection takes place, and the organisms with best variation will have selective advantage above others. Consequently they have higher survival rates compare to others in the population.

This is   survival of the fittest by natural selection , this is the second conclusion  of Darwin theory.

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If one side of a DNA molecule is: AGATTCGAACCT, what would the complementary strand be?
Veseljchak [2.6K]

Answer:

TCTAAGCTTGGA

Explanation: adenine (A), thymine (T), cytosine (C) and guanine (G). Each base can only bond with one other, A with T and C with G.

3 0
3 years ago
1. How many pounds of biological material is below that soil surface?​
Stella [2.4K]

Answer:

The amount of organic matter in mineral (sand, loam or clay) soils ranges from very low being 1% by weight, to average being 2 to 4%, and high being greater than 5%. There are also “muck” or organic or peat based soils that are 30 to 40% organic matter. The general consensus is the more soil organic matter the better.   approximately 45%

Soil Composition

The basic components of soil are minerals, organic matter, water and air. The typical soil consists of approximately 45% mineral, 5% organic matter, 20-30% water, and 20-30% air. These percentages are only generalizations at best.

Explanation:

8 0
3 years ago
Can you guys help me
Snezhnost [94]
Survival of the fittest is talking about when you have traits that will help you, you are more likely to live rather than not having those traits. For example, a bird that swims a lot has webbed feet so it has a better chance of surviving then a bird who does not have webbed feet
5 0
3 years ago
What is a Nor'easter?
Akimi4 [234]
Im pretty sure A Nor’easter is a strong wind or storm blowing from the northeast. Hope this helps
4 0
3 years ago
Read 2 more answers
If the lithosphere is resting on the asthenosphere and you put a lot of
statuscvo [17]

Answer:

Explanation:

Can you think of a solid that can flow?

You use one twice a day! Toothpaste is a solid that can flow. Is the asthenosphere made of toothpaste? Only if the

toothpaste is ultramafic in composition, and then it would only be able to flow if it were really, really hot. Still the

toothpaste analogy gives you a good image of how the asthenosphere might behave if you squeezed it!

Lithosphere

The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid

solid. The lithosphere is the outermost mechanical layer, which behaves as a brittle, rigid solid. The lithosphere is

about 100 kilometers thick. How are crust and lithosphere different from each other?

7 0
3 years ago
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