A response to light intensity in which exposure to medium-intensity light results in increased tolerance to high-intensity light.

The synchronization of a circadian rhythm to environmental time cues such as light.

Any process that modulates the frequency, rate or extent of a circadian rhythm. A circadian rhythm is a biological process in an organism that recurs with a regularity of approximately 24 hours.

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an absence of light stimuli.

The control of plant growth, development, and differentiation in response to growth in darkness.

Any process that decreases the frequency, rate or extent of merging of two or more mitochondria within a cell to form a single compartment.

Any process that stops, prevents or reduces the rate or extent of development, the biological process whose specific outcome is the progression of an organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

Any process that modulates the frequency, rate or extent of merging of two or more mitochondria within a cell to form a single compartment.

Any process that stops, prevents, or reduces the frequency, rate or extent of epithelial cell migration.

Any process that activates or increases the frequency, rate or extent of epithelial cell migration.

Any process that modulates the frequency, rate or extent of anatomical structure morphogenesis.

Any process that increases the frequency, rate or extent of merging of two or more mitochondria within a cell to form a single compartment.

Any process that activates or increases the rate or extent of development, the biological process whose specific outcome is the progression of an organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating an increase or decrease in the concentration of salt (particularly but not exclusively sodium and chloride ions) in the environment.

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating an increase or decrease in the concentration of solutes outside the organism or cell.

Any process that modulates the frequency, rate or extent of the platelet-derived growth factor receptor signaling pathway.

Any process that increases the frequency, rate or extent of the platelet-derived growth factor receptor signaling pathway.

The movement of an organism, or part of an organism, such as leaves or tendrils, in response to a touch stimulus, usually toward or away from it.

Any process that stops, prevents, or reduces the frequency, rate or extent of the platelet-derived growth factor receptor signaling pathway.

Any process in which an organism or cell protects itself from ultraviolet radiation (UV), which may also result in resistance to repeated exposure to UV.