Respuesta :
1) DI: a,d,g. DD:b,c,e,f. 2) K is a constant equal to the population size at the equilibrium. 3) 2,4,5,6. 4) 100. 5) Prey population size is followed by predator population size. 6) B: a,c,d,h. A: b,e,f,g,i. 7) 293.45 kcal. 8) caloric energy.
1) What are density dependent or independent factors?
These are limiting factors that affect the carrying capacity.
- Density-dependent, DD, factors are a result of the population size
- Density-independent, DI, factors do not depend on population size. These are human impact, weather, or natural disasters Â
a. Weather (snow, rain, drought) → Density-independent
b. Predation → Density-dependent, DD
c. Competition → Density-dependent, DD
d. Natural disasters → Density-independent, DI
e. Food availability → Density-dependent, DD
f. Disease → Density-dependent, DD
g. Human activities (deforestation, dams) → Density-independent, DI
2) What is carrying capacity?
Carrying capacity (K) is the maximum point at which the environment can support a growing population. It is a constant equal to the size of the population (N) at the equilibrium point when the natality rate and the mortality rate get equal to each other.
3)
- unlimited food → No, because it is unlimited
- limited space/shelter (habitat), → Yes, because it is limited
- unlimited water → No, because it is unlimited
- disease → Yes, because it is dense-dependent
- predation → Yes, because it is dense-dependent
- competition → Yes, because it is dense-dependent
4) 100 is the number of individuals in a species that equals the carrying capacity.
- When the population reaches 100 individuals, K = N = 100, it reaches an equilibrium.
- If it keeps growing N = 101, it must decrease dropping to N = 99.
- When N < 100 it can still grow.
5) What is the predator-prey model?
When a 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.
But when predators appear, the more available items, the more predator there will be.
The predator population increase in size, decreasing the prey populations size. So there are fewer available items to prey on.
The prey population also affects the predator population. The predator 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.
Predatory/prey graph,
The graph shows the variation in population size of predators are preys with time. For a better understanding look at the attached files.
1. prey population increases in size → red line
2. predator population increases in size → green line
3. prey population decreases in size → red line
4. predator population decreases in size → green line
6) What are biotic and abiotic factors?
The ecosystem is composed of living and non-living things that interact and depend on each other.
- Abiotic factors are physical and chemical things of the ecosystem that do not include any living elements.
- Biotic factors are all the living components in the ecosystem.
a. Bacteria → Biotic, B
b. pH level  → Abiotic, A
c. fungus  → Biotic, B
d. plants  → Biotic, B
e. oxygen availability → Abiotic, A
f. Sunlight → Abiotic, A
g. water → Abiotic, A
h. animals/parasites/predators  → Biotic, B
i. pollution → Abiotic, A
7) What is the 10% rule?
From the energy that reaches the earth's surface, only 0.1 or 1% is taken by autotroph organisms. This small percentage of energy flows through all organisms in the ecosystem until it dissipates in the environment.
The 10% rule states that only about 10% of the energy stored as biomass at one trophic level, ends up as biomass at the next trophic level.
The progressive reduction of energy determines the number of trophic levels (4 or 5).
Seed → 29345 kcal of energy
⇒ 10% of 29345 kcal is 2934.5
The mouse gets  2934.5 kcal of energy
⇒ 10% of 2934.5 kcal is 293.45
The snake gets  293.45 kcal of energy
⇒ 10% of 293.45 kcal is 29.345
The hawk get 29.345 kcal of energy.
According to these calculations, the snake have 293.45 kcal of energy.
8) What type of energy is lost during food chains/webs?
Producers receive luminous energy from the sun, and they store 1% of it.
Consumers along the trophic web receive 10% of chemical energy from the direct anterior link. The remaining energy is lost as caloric energy.
The correct answer is caloric energy.
You can learn more about
density dependent/independent factors at https://brainly.com/question/6675324
carrying capacity at https://brainly.com/question/2375972
predator-prey model at https://brainly.com/question/22122240
biotic/abitoc factors at https://brainly.com/question/1542938
10% rule at brainly.com/question/11665402
