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kykrilka [37]
3 years ago
13

Natural selection is best described as a a change in an organism in response to a need of that organism b a process of nearly co

nstant improvement that leads to an organism that is nearly perfect c differences in survival rates as a result of different inherited characteristics d inheritance of characteristics acquired during the life of an organism
Biology
1 answer:
exis [7]3 years ago
8 0
Natural selection is the acquiring of the characters that enable an organism to survive in a particular climate, or condition. It is the differential survival of the organisms and having a different phenotype, which are heritable. This phenomenon is a key theory of evolution. 
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Please needed as soon as Possible thank you!
kramer

Answer:

The answer is B. Stratum Basale

5 0
2 years ago
Which statement is not true about prokaryotic cells? They are always single-celled organisms, and they never contain mitochondri
IRINA_888 [86]

Answer:

They lack a nucleus, but they do have ribosomes.

Explanation:

Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid.

6 0
3 years ago
Read 2 more answers
Grafting requires both a scion and a rootstock. true or false​
belka [17]

Answer: true

Explanation: the upper part (scion) of one plant grows on the root system (rootstock) of another plant. In the budding process, a bud is taken from one plant and grown on another.

5 0
2 years ago
1. How does our ecological footprint affect each of the spheres on Earth?
Viefleur [7K]
Lithosphere (or geosphere) describes all the rocks, minerals and molten magma found on or in the Earth

The hydrosphere describes all the water on Earth – including liquid water (oceans, etc.) and vapour (precipitation)

The atmosphere describes the layer of gases surrounding the Earth and is divided into sections (stratosphere, etc.)

The biosphere is composed of all the living organisms on the planet (including plants, animals, bacteria, etc.)


The four spheres are interconnected, so human impact on one sphere will potentially effect other spheres

The release of plastic pollution into the oceans (hydrosphere) will impact on marine life (biosphere)

The production and release of CFCs into the atmosphere will effect the impact of UV radiation on the biosphere


The Four Earth Spheres



5 0
3 years ago
During what stage of the cell cycle will a cell release cdks to initiate the events for cell division
vodomira [7]
It is during G1 phase that a a cell release cdks to initiate the events for cell division. At this stage, b<span>iochemical triggers known as </span>cyclin-dependent kinases<span> (Cdks) switch on cell cycles events at the corrected time and in the correct order to prevent any mistakes.</span>
3 0
3 years ago
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