a system for growing food without using much land
Tough question. Technology can be defined as applied science, so the real question is, "when was the first scientific research and experimentation done?" For recorded history I don't know. But I am sure that early man was inadvertently doing science and technology just to improve his survival rate.
This question is very broad. Engineers have developed countless technology to ensure a spaceship's survival in space. Its realy too much to list, but basically the goal is to protect a spaceship from the harmful environment of space, weather its radiation, temperature, or debris.
People have always had questions. Science is a way of giving reliable answers to these questions. It is a useful and accurate way of discovering new things.
When the aircraft you are travelling stops flying then if if you value your survival and want to return to the ground safely then using a parachute is a very good idea.
Structures for growing food in or near cities
a system for growing food without using much land
a method for growing food with less available land
Selection acts directly on individuals within a population, favoring certain traits that increase an individual's survival and reproductive success. This process leads to the differential reproductive success of individuals with advantageous traits, ultimately shaping the genetic makeup of the population.
The survival and recovery of a population depends on a minimum population base referred to as its biotic community.
technology
technology
Water or the lack of it. All humans require FRESH water, if it is not readily available the the population does not survive.
Dialysis
Without technology, humans would not have evolved into what we've become. To primitive man, fire was the technology that was most important. As humans developed and learned to use tools and farm, a larger population was able to be supported. As time moved on, technologies improved,and an even larger population could be sustained. Improving on technologies as humans have evolved is the key to survival of the species.
abiotic resource. Examples include environmental factors like drought, temperature extremes, or pollution that can directly affect the survival or reproduction of a population, leading to a decrease in population size.
There are quite a few biotic factors that affect the size of a population in an ecosystem. Grass is one of these factors.