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alexgriva [62]
3 years ago
14

Elk herds in Yellowstone National Park are herbivores that browse on the available vegetation. Which factor is critical to ensur

ing stability in this ecosystem?
Biology
2 answers:
DaniilM [7]3 years ago
7 0

Answer:

The presence of predators, such as grey wolves, is required to keep the elk population in check. If the population of elk is allowed to grow unchecked, the vegetation would eventually start disappearing, followed by the disappearance of the elk.

Explanation:

morpeh [17]3 years ago
3 0
Elk obviously need the vegetation they eat to be abundant and unlike believed in the past they need to be prayed on by predators. Without predators, the elk overpopulate and eat all of the plants and cause other animals like beavers to die off. 
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18. In replication of DNA, the helix is opened and what is unzipped?
aalyn [17]

Answer:

B) Hydrogen Bond

Explanation:

Those are the bonds that the restrictive enzymes unzip and the bonds that hold the complementary bases.

4 0
3 years ago
Into which chamber of the heart do the superior vena cava, inferior vena cava, and coronary sinus return deoxygenated blood? Cir
azamat

Answer:

  • Human heart is comprised of four regions, components, zones or muscular containers. As, the blood quality is regulated by the blood, by keeping the deoxygenated form of blood apart from the oxygenated form of blood inside the heart and then provide suffiecient amount of materials, solutes, and other nutrients to the different tissues and organs of the human body in a proper manner.
  • The deoxygenated form of blood is collected and brought to the right atrium by <u>the superior and inferior venacava</u>, as it provides a more safer route for the transportation of these materials in order to remove the unwanted substance from it by sending it back to the lungs through the pulmonary artery.
  • Inside the lungs the blood is cleaned up and then sent back to the heart in order to be pumped into the different portions of the heart.                                                                        

7 0
3 years ago
What does the author mean by the word carving
lapo4ka [179]
Do you have the sentence where the author uses the word?
5 0
3 years ago
Explain any two specific adaptation that allow animal to survive in Mountain habitat<br><br>​
IRISSAK [1]

Answer:

Among others, two adaptations might be

  1. Avoiding corporal heat loss
  2. Increasing oxygen absorption  

Explanation:

Up in the mountains, there is low oxygen, food is scarce, and adverse meteorological conditions. Animals and plants need to develop different strategies to survive. These adaptations involve not only physical and physiological changes but also behavioral changes. To mention a few adaptations, we can name:

  • Avoiding heat loss. Temperature tends to be very low at highs, so, to <u>avoid heat loss,</u> animals develop shorter legs, tails, and ears. By doing this they reduce the area or surface of heat loss and also avoid getting frozen. In mammals, the coat is also very important. A thick coat helps them maintain a constant body temperature and keep warm. Some amphibians might also develop a thicker skin as they can not regulate their temperature, and it also helps them not to dehydrate.
  • Camouflage: Coat is also helpful in camouflaging. Mammals´ hair color depends on their environment. Some animals, such as hares, can also change their fur color depending on the season. During snow seasons they turn white, and during the warmer season, they turn yellow or brown.
  • Size and metabolism: Small mammals lose heat very fast, so they need to keep active and feeding most of the time. They have an elevated metabolism to keep warm. On the contrary, big animals, such as bears, need to hibernate to reduce their metabolism and get to survive, otherwise, they would need many reserves to cover their energetic requirements.
  • Oxygen absorption: Some animals have adapted to the lack of oxygen by increasing their heart and lungs capacity as well as their capability to absorbing more oxygen from the blood.  
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3 years ago
What is the role of activation energy in a chemical reaction
Snezhnost [94]
Activation energy is the amount of energy required to begin a chemical reaction.
5 0
3 years ago
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