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ladessa [460]
3 years ago
6

What is the change of force being used when you throw a ball ?​

Biology
1 answer:
Marta_Voda [28]3 years ago
5 0

Answer:

The forces on a thrown ball after it leaves the thrower's hand are the force of gravity and possibly the force of air resistance.

Explanation:

The force of gravity at the surface of the Earth is the gravitational acceleration at that location (9.8 meters per second per second) times the mass of the ball.

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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
2 years ago
the graph demonstrates the quantitative variation for skin pigmentation. which conclusion is supported by the graph? a)more than
BartSMP [9]

Answer : Option D) Fewer people have skin pigmentation lighter than the central peak than people who have pigmentation darker than the central peak.

Explanation : The quantitative variation which is shown for the skin is best explained by option D. Which shows that fewer people have got skin pigmentation which is lighter than the central peak in the graph, compared to the people who have darker pigmentation than the central peak.

4 0
3 years ago
Read 2 more answers
A chemical reaction is the only way to separate an?
irga5000 [103]

Answer:  Mixture

Explanation:

If there is and unstable element composition of say, pure graphite an un-pure gold then a chemical reaction will most likely be used to separate the two elements.

5 0
3 years ago
Bicuspid valve prevents backflow into
ehidna [41]

prevents backflow into the left atrium

5 0
3 years ago
The nurse is caring for a terminally ill patient. how can the nurse actively communicate with the patient?
Nataly [62]
By asking open-ended questions
6 0
3 years ago
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