Population Ecology: What Causes Populations to Change?

The video tutorial explores the concept of roles and niches in both human and animal habitats. It explains how organisms interact with their environment, forming ecosystems. The tutorial discusses different types of relationships among animals, such as competitive and mutualistic interactions, using examples like the oxpecker and zebra. It also covers the concept of limiting factors, which affect population sizes in ecosystems, and introduces the idea of carrying capacity, the maximum population size an ecosystem can support without degradation.

What is the term used to describe the specific roles individuals fill in their habitats?

• Community

• Ecosystem

• Biosphere

• Niche

Which type of relationship involves organisms benefiting each other without harm?

• Parasitic

• Competitive

• Mutualistic

• Predatory

What is an example of a mutualistic relationship mentioned in the video?

• Eagle and rabbit

• Oxpecker and zebra

• Shark and fish

• Lion and gazelle

What is a limiting factor in an ecosystem?

• The size of the habitat

• The number of species

• The availability of resources

• The diversity of organisms

What does 'carrying capacity' refer to in an ecosystem?

• The diversity of the ecosystem

• The maximum population size that can be supported

• The amount of available food

• The total number of species present