The answer is <span>bird droppings that contain seeds from a different location.
</span><span>Gene flow includes a transfer of alleles from one population to another. So imagine a population of plant A on location 1 and another population of plant A on location 2. They cannot interchange their genes. But if birds drop seeds from location 1 and those seeds get to location 2, gene flow may occur.</span>
Cell signalling pathways are used to maintain homeostasis. Enzymes are normally present in adequate concentrations but whenever the need for a particular enzyme or protein arises, cell signalling is used.
Signal is sent to that particular cell, the process of genetic expression is activated. A gene that codes for that particular protein(enzyme of interest) goes through transcription, where that genes DNA is copied to make a messenger RNAmolecule, which is further expressed by a process called Protein expression. Lastly, transported to that particular area where it is needed.
The two factors about the ecology of the great plains did farmers fail to understand
The role the native grasses played in the environment
That local weather patterns were subject to periodic drought
<h3>What factors about the ecology of the great plains did farmers fail to understand?</h3>
- Environmental change has been significantly less drastic than the two-thirds of the grassland that farmers were unable to successfully plow for crops.
- The majority of such area still has native vegetative cover, despite the fact that virtually all of it has been extensively grazed by cattle and in much smaller amounts by sheep and horses.
- Two key climatic gradients—an east-west gradient of increasing precipitation and a north-south gradient of increasing temperature—which both produce drought—control the spread of both natural ecosystems and land use management.
Learn more about the great plains with the help of the given link:
brainly.com/question/17750038
#SPJ4
