B. Water is easily polluted or depleted before it can be replaced.
Natural selection is the primary process that drives Darwin's theory of evolution, the correct option is a.
Darwin's theory of evolution is primarily driven by the process of natural selection. Natural selection is the mechanism by which certain heritable traits become more or less common in a population over successive generations. It occurs due to the differential reproductive success of individuals with advantageous traits that are better suited to their environment. Individuals with beneficial traits are more likely to survive and reproduce, passing on their advantageous traits to their offspring.
Over time, this leads to the accumulation of favorable traits within a population, while less advantageous traits become less prevalent. Natural selection is driven by various factors, including environmental pressures, competition for resources, and adaptation to changing conditions. It is a key driving force behind the diversity and adaptation of species observed in the natural world, the correct option is a.
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The complete question is:
Which process drives Darwin’s theory of evolution?
a. Natural selection
b. Genetic drift
c. Lamarckism
d. Mutation
Selective breeding ( also called {blank }) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotype traits (blank) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together. (blank) animals are known as breeds , normally bred by a professional breeder , while domesticated plants are known as (blank) , cultigens , or cultivars. Two purebred animals of different breeds produce a (blank). Flowers , vegetables and fruit-trees may be bred by amateurs and commercial or no-commercial professionals: major crops are usually the provenance of the professinonals.
Answer Key
Selective breeding also called (artificial selection.) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics.) by choosing which typically animal or plant males and females will _exually reproduce and have offspring together. (Domesticated.) animals are known as breeds, normally bred by a professional breeder, while domesticated plants are known as (varieties.) , cultigens, or cultivars. Two purebred animals of different breeds produce a (crossbreed.) . Flowers, vegetables and fruit-trees may be bred by amateurs and commercial or non-commercial professionals: major crops are usually the provenance of the professionals.
B. tight junctions of epithelial mucosa cells
C. replacing of damaged epithelial mucosa cells
D. rennin
In order to increase the rate of photosynthesis in a plant, a plant should be developed with many broad leaves. The broad leaves will have increased surface area and more chlorophyll. The increased number of the leaves in the plant will also contribute to the overall increased rate of the photosynthesis.
A strong and thick stalk will support the plant but will have no effect on the rate of photosynthesis. Narrow leaves will decrease the photosynthesis rate. Bright flowers will aid in pollination via the honeybees but not increase the photosynthesis rate.
Hence, the correct answer is 'many broad leaves'.
Chief cells produce pepsinogen, while parietal cells secrete hydrochloric acid (HCl) in the stomach for protein digestion.
Chief cells, located in the gastric glands of the stomach, release pepsinogen, an inactive precursor enzyme. Pepsinogen is converted to its active form, pepsin, by the acidic environment in the stomach. Pepsin plays a vital role in breaking down proteins during digestion. Parietal cells, also present in the gastric glands, are responsible for secreting hydrochloric acid (HCl).
This strong acid serves several crucial functions in the stomach. It activates pepsinogen to pepsin, facilitating protein digestion. Additionally, HCl creates the highly acidic environment necessary for pepsin's action and further protein breakdown. Moreover, the acidic conditions in the stomach help sterilize the contents, neutralize harmful microorganisms, and enable the absorption of certain nutrients.
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