Question

Помогите с биологией, пожалуйста! 1) Первичной сукцессией НЕ является зарастание 1.пашни 2.оголенного участка скалы 3.сформировавшейся песчаной дюны после отхода ледника 4.участка застывшей вулканической лавы 2)Определите биотические факторы среды. Выберите несколько вариантов ответа 1.таяние снега весной 2.конкуренция за пищу между близкими видами 3.строительство городов 4.усиление ветра 5.охота человека на кабанов 6.внутривидовая конкуренция 3) Цепи выедания могут начинаться с 1.собаки 2.миноги 3.ряски 4.ромашки 5.клевера лугового 6.лося

Answer 1

1)1(пашни)
2)26,возможно ещё 5(но это не точно)
3)346

Answer 2

Primary Succession

Primary succession refers to the process of ecological succession that occurs in an area where no soil or organisms exist. It typically begins in barren environments such as bare rock, sand dunes, or newly formed volcanic lava. The process starts with the colonization of pioneer species, such as lichens and mosses, which gradually break down the rock or create soil through their decomposition. Over time, more complex plant species colonize the area, leading to the establishment of a stable ecosystem.

Based on the given options, the following scenarios represent examples of primary succession:

1. Zara's field being overgrown by vegetation after it was left uncultivated. 2. An exposed rocky area gradually being colonized by pioneer species. 3. The formation of a sand dune after the retreat of a glacier. 4. A section of solidified volcanic lava being colonized by plants.

Please note that the process of primary succession involves the colonization of an area without pre-existing soil or organisms. Therefore, the option of an exposed rocky area being colonized by pioneer species would be an example of primary succession. [[1]] [[2]] [[3]] [[4]]

Biotic Factors in the Environment

Biotic factors in the environment are living components that influence the ecosystem. They include interactions between organisms, such as competition for resources, predation, and symbiotic relationships. Based on the given options, the following examples represent biotic factors:

1. Snow melting in spring: This is an abiotic factor as it is related to the physical environment rather than living organisms. 2. Competition for food between closely related species: This is a biotic factor as it involves interactions between organisms competing for limited resources. 3. Construction of cities: This is an anthropogenic (human-induced) factor that can have both biotic and abiotic impacts on the environment. 4. Strengthening of wind: This is an abiotic factor as it is related to the physical environment rather than living organisms. 5. Human hunting of wild boars: This is a biotic factor as it involves the interaction between humans and the population of wild boars. 6. Intraspecific competition: This is a biotic factor as it involves competition between individuals of the same species for resources.

Please note that biotic factors are related to living organisms and their interactions within an ecosystem. [[5]] [[6]] [[7]] [[8]]

Food Chains

Food chains represent the flow of energy and nutrients through an ecosystem. They typically start with a primary producer, such as plants or algae, which convert sunlight into energy through photosynthesis. The primary producer is then consumed by a primary consumer, which is subsequently consumed by a secondary consumer, and so on.

Based on the given options, the following organisms can be part of a food chain:

1. Dog: Dogs are typically not part of natural food chains as they are domesticated animals and often rely on human-provided food. 2. Minnow: Minnows can be part of a freshwater food chain as they are small fish that serve as prey for larger fish or aquatic predators. 3. Seaweed: Seaweed can be part of a marine food chain as it is a primary producer that provides energy to herbivorous organisms. 4. Chamomile: Chamomile is a flowering plant and can be part of a terrestrial food chain as it can be consumed by herbivorous insects or small mammals. 5. Meadow clover: Meadow clover is a flowering plant and can be part of a terrestrial food chain as it can be consumed by herbivorous organisms. 6. Moose: Moose can be part of a terrestrial food chain as they are herbivorous mammals that consume vegetation.

Please note that the specific organisms mentioned can be part of different food chains depending on the ecosystem and their ecological interactions. [[9]] [[10]] [[11]]