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chubhunter [2.5K]
3 years ago
6

Which of the following serves as the cell's boundary from its environment

Biology
1 answer:
Bad White [126]3 years ago
4 0
B. Cell membrane
Remember cell membrane is the structure aka “wall of the house” is the clear boundary between the cells internal and external environments:))
Hope this helps
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A population of trout in a lake has significantly declined over the past year. The main source of food for the fish in this lake
andrew11 [14]

The decline in the overall population of trout and larger fish is because the Insect population has decreased.

<h3>What is a population?</h3>

A population is a group of organisms of the same species living in the same habitat.

Population of organisms is affected by;

  • availability of water
  • space
  • food and nutrients
  • predators
  • climate change

Since the population of trout is directly affected by the number of insect species, the decline in the overall population is because the Insect population has decreased.

Learn more about population at: brainly.com/question/746835

3 0
2 years ago
A population of wolves predates a population of moose on Isle Royale, Michigan, where there are fewer wolves than moose to start
andrew11 [14]

Complete question:

A population of wolves predates a population of moose on Isle Royale, Michigan, where there are fewer wolves than moose to start. The wolves prey on the moose and eat well, allowing them to have abundant offspring. However, as the wolf population rises, the moose population drops, and over time, the wolf population begins to drop also because of the reduced availability of resources. As the wolf population drops, moose are able to better survive and reproduce, causing the moose population to rise. With this abundance of moose, the wolf population is able to rebound until their population exceeds the moose population’s ability to support the number of wolves. Which population dynamic does this series of oscillations represent?

  1. Delayed density dependence
  2. Delayed density independence
  3. Extinction vortex
  4. Carrying capacity

Answer:

  1. Delayed density dependence

Explanation:

The Delayed density dependence occurs when two species are in interaction (prey-predator or parasite-host), and the dynamic of each population follows the dynamic of the other population. The natality and mortality rates of one species follow the rates of the other species.

<em>Delayed density dependence dynamics regulate populations and allow the occurrence of equilibrium or balance in nature.</em>

<u>Predator-prey scenarios</u>

Assuming that the prey lives in the ideal environment with no predators, it shows an exponential growth rate. Prey can grow, develop, and reproduce, increasing its population size. The more available items, the more predator there will be. The predator population increase in size, and its presence affects the prey populations, leading it to decrease. So there are fewer available items to prey on.    

The prey population also affects the predator population. After the increase in the predator population size, the number of available prey decreases. The predator lives in an ideal environment but depends on the prey density. The more predators there are, the fewer prey there will be left. The predator population decreases exponentially due to the item's lack. The predation rate depends on density as well as natality and mortality rates.

So, to sum up,

  1. prey population increases in size
  2. predator population increases in size
  3. prey population decreases in size
  4. predator population decreases in size

In this particular example, the wolves population follows the moose population and vice-versa. It is not simultaneous. It happens with a delay.

<em>Moose influences the wolf population because they are their source of food. The more moose, the more wolves there are. The fewer moose, the fewer wolves there are. </em>

This is a density-dependent dynamic because both populations are affected when they reach a high value.

6 0
3 years ago
Rabbits are very popular domesticated animals, so popular that there are over 300 breeds of domesticated rabbits in the world. Y
Inessa [10]

Answer:

breed a has an average of 9 pounds

breed b has an average of 12.125 or 12 (rounded) pounds

Factors you may describe could be, food sources, environment, and climate could have changes in the characteristics of different breeds.

Having controlled factors, having 2 baby rabbits of the same breeds and monitoring the same food and water, observations and data can be collected, done multiple times data can be complied and used to theorize

6 0
2 years ago
All the interconnected feeding relationships in an ecosystem make up a food
Helen [10]

The answer is.. C, Network!

4 0
3 years ago
Several reservoirs hold water during the water cycle.
Viefleur [7K]

Answer:

d

Explanation:

reservoirs are places were water are held for a lond period of time. Do a lake or ocean is a place where water is held for a long period of time.

5 0
3 years ago
Read 2 more answers
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