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Papessa [141]
3 years ago
9

Which of the following observations helped Darwin shape his concept of descent with modification?

Biology
1 answer:
Zarrin [17]3 years ago
4 0

Answer:

The correct answer will be option-D.

Explanation:

Darwin is best known for his theory of evolution which he proposes after collecting the specimens of plants and animals on his voyage.

He observed the similarity and differences of the morphological pattern as well as the species present in the area. On the basis of his conclusions, he suggested that organism get traits from their parents and species to change over time also called descent with modification.

One of the evidence that supported his concept is that he observed plant species in South America and found that these species closely resembled the species of the tropical regions of South America rather than species of the temperate region of Europe as the habitat was same.

Thus, option-D is the correct answer.

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In a sample of bacterial DNA, 14% of the nitrogenous bases are thymine. About what percentages are the other nitrogenous bases?
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The answer is D

Explanation: You need to have the same number of complementary bases.
6 0
3 years ago
Which laboratory finding is a characteristic feature in a client with hypercortisolism?
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<span>Glucose metabolism is disturbed by hypercortisolism and the client's fasting blood glucose is increased. The client also has decreased serum potassium level. Since cortisol is an immunosuppressant, it lowers the immune system by lowering the lymphocyte count. </span>
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24. Which organism would occupy the
Nadusha1986 [10]

Answer:

The organism to have maximum energy would be the algae since ii will be at the lowest level. so the answer is 'B'.

Explanation:

The pyramid of energy shows the flow of energy from one trophic level to other. The lowest trophic level is occupied by the producers. In this case algae acts as the producer. Krill acts as the primary consumer, followed by leopard seal as the secondary consumer and finally killer whale as the tertiary consumer. The <em>lowest trophic level </em> contains maximum energy.

As we go upwards, only 10% of the energy gets transferred to the next trophic level.

6 0
3 years ago
What tissue has lacunae, calcium salts, and blood vessels? Select one: a. fibrocartilaginous tissue b. areolar tissue c. bone (o
kipiarov [429]

Answer:

c. bone (osseous tissue)

Explanation:

The extracellular matrix of the bone tissue consists of an organic component and an inorganic component.

The organic component includes Collagen , proteoglycans and glycoprotiens, While the inorganic component contains calcium and phopsphorus. The cells are present in the lacunae situated betwen the lamellae and contain a number of oblong spaces.

It also contains blood vessels as a typical long bons is supplied by a nutrient artery , periosteal vessels and epiphyseal arteries.

Hence C is the right answer.

8 0
3 years ago
Please help I got this wrong and I don't understand I need help
OlgaM077 [116]

Answer:

If it´s not A then choose C

Explanation

If they were land animal and could not swim then the only logical reasoning would be that the two pieces of land drifted apart from each other and the fossils were in between them and that´s why they ended up in the ocean.

6 0
3 years ago
Read 2 more answers
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