The cell membrane is selectively permeable, allowing only certain substances to pass through. Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. The three main kinds of passive transport are diffusion, osmosis, and facilitated diffusion.
<span>Most reflex arcs involve only three neurons. The stimulus, such as a needle stick, stimulates the pain receptors of the skin, which initiate an impulse in a sensory neuron. This travels to the spinal cord where it passes, by means of a synapse, to a connecting neuron called the relay neuron situated in the spinal cord.</span>
Answer:
You did not put the answer options, but I can help you by stating that the scale of agriculture today is large-scale agriculture and it can be defined by a term that presents large farms with extremely high productivity.
Explanation:
The scales of agriculture are measured through the agricultural productivity achieved through work in the agricultural sector. Small-scale agriculture is one where productivity is low, the farmer does not produce as many products and most of them are harvested for family consumption, becoming a type of subsistence agriculture.
Large-scale farming is what we can see today, they are characterized by very large farms that promote high productivity, producing thousands of products in the shortest possible time.
The rotation of Earth on its axis
Answer: A. environmental influences
A development in terms of biology is a gradual process of changes that occurs in an organism until the organism attains maturity or adulthood. Development can be physiological and mental development. Environmental influences are influences of nature on development. Some of the environmental influences are nutrition, altitude, temperature and climate. For example sunny weather conditions in a region can induce dark complexion in the habitants.
