Human impact on the environment

Strip cropping is an agricultural technique where different crops are planted in alternating strips across a field, often perpendicular to the slope, to slow water runoff and prevent soil erosion.

Pollution is defined as the introduction of harmful substances or contaminants into the environment that cause adverse changes.

Water erosion occurs when flowing water wears away soil and rock, creating features like crevices, channels, and gullies. The example describes water repeatedly hitting a mountainside and creating crevices (correct spelling is crevices, not cervices), which is a clear instance of water erosion.

A Species Survival Plan (SSP) is a cooperative breeding and management program among zoos and aquariums to ensure the survival of selected species. These programs maintain genetic diversity and population numbers of threatened or endangered species in captivity.

Habitat size refers to the physical area required by a species or ecosystem to function. The example provided correctly identifies a specific measurement used in ecological studies.

Harvesting is the agricultural process of gathering mature crops from the fields.

A greenhouse is a structure with walls and a roof made mainly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown.

A renewable resource is one that can be replenished naturally over a short period. Oxygen is continuously replenished through photosynthesis, whereas coal, oil, and natural gas are fossil fuels that take millions of years to form.

Recycling is a positive human action that reduces waste and conserves resources, helping the environment. The other options (pollution, litter, trashing) are harmful.