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Valentin [98]
3 years ago
12

Which of the following astronomers was the first to propose elliptical orbits of the planets in our solar system?

Biology
1 answer:
Vaselesa [24]3 years ago
3 0
 <span>KEPLER was the first astronomer to propose elliptical orbits for the planets in our solar system. </span>
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Define what is a sex -linked disorder
sleet_krkn [62]
 any disorder involving sexual functioning, desire, or performance.any such disorder that is caused at least in part by psychologic factors. Such a disorder characterized by a decrease orother disturbance of sexual desire is called a sexual dysfunction, and that characterized by unusual or bizarre sexualfantasies, urges, or practices is called paraphilia. Also called psychosexual disorder, psychosexual dysfunction<span>.</span>
8 0
3 years ago
NEED HELP QUICK PLEASE HELP
kozerog [31]

Answer:

Question 1

D

Question 2

C

Question 3

D

Explanation:

1. An ecosystem is MOST likely to return to its original condition after Tall prairie grass burns after being struck by lightning.

Here is a research paper in which they explained how this happened. (Komarek, E. V. (1971). Lightning and fire ecology in Africa. In Tall Timbers Fire Ecology Conference (Vol. 11, pp. 473-509).)

2. In some national parks, controlled fires are maintained by firefighters. The major reasons for using controlled burns to maintain certain ecosystems is to give nonnative plants a chance to colonize the region.

A recent article provided the insight of this situation (Xanthopoulos, G., Delogu, G. M., Leone, V., Correia, F. J., & Magalhães, C. G. (2020). Firefighting approaches and extreme wildfires. In Extreme Wildfire Events and Disasters (pp. 117-132). Elsevier.)

3. One reason for the change in the Galápagos ecosystem has been the introduction of species that were not on the island before, such as donkeys, goats, cats, dogs, and insects. The introduction of nonnative species MOST likely disrupt the balance of life on the islands due to greater competition for limited food sources.

Scientist said that food competition is actually a struggle to survive in any ecosystem here is the reference paper (Eckhardt, R. C. (1972). Introduced plants and animals in the Galapagos Islands. Bioscience, 22(10), 585-590.)

5 0
3 years ago
Which of the following accurately describes the structure of an atom? Question 6 options: Protons are in the nucleus, with elect
aniked [119]

Answer:

dear user

the answer is option no.1 protons are in the nucleus and ,with electrons and neutrons orbiting the nucleus

5 0
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What must happen before a chemical recreation can begin?
ddd [48]

Answer:

The activation energy must be reached. The catalyst makes lower energy pathways available.

Explanation:

3 0
4 years ago
State two features in the nephron that facilitate ultrafiltration​
valentina_108 [34]

Answer:

The glomerulus is a knot of cappilaries inside the Bowman's capsule. ... Podocytes are cells that have 'foot-like extensions' which are wrapped around a capillary. This increases the surface area for filtration.

Explanation:

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