The process of organisms fighting for mates food and living space is called

The process of organisms fighting for mates food and living space is called competition.

Explanation:

Ecological interactions of organisms include adaptations, interdependence with each other and competition.

Although there is an abundance of natural resources for food and space, due to ever increasing demands and evolutionary and environmental changes, organisms constantly compete with each other for resources like food and space.  

Organisms fight or compete with each other for food, shelter, mate, sunlight etc.

The autotrophs need to compete with each other for resources needed for photosynthesis like water, carbon dioxide, and other nutrients and minerals present in the soil. Similarly other consumers compete with each other for food. This competition may be interspecific (between two or many species) or intraspecific (within the same species).

Biodiversity helps to balance the ecological systems and avoid this competition between organisms.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.