Answer:
it is the part visible to the human eye unless it rains.
Mutations in these genes can produce new or altered traits, resulting in heritable differences (genetic variation) between organisms. ... One definition of a species is a group of organisms that can reproduce with one another and produce fertile offspring.
Answer:
The correct answer is - variables that they didn't control and not enough replicates
Explanation:
In this particular case, Pablo and Johanna using too many variables in their experiment or research, All the variables used, are not controlled and with time these variables can not be replicated again on experiment groups.
They did not select a particular age or weight of dogs, the diets are different and they feed dry kibble to only one dog. There are so many variables and for a better result experiment, all variables should be controlled only the independent variable is permitted to manipulate.
Answer:
a. increasing birth rate with a greater number of young organisms
Explanation:
When the population growth is increasing in an area there is an increasing birth rate and the age structure begins to young.
Population growth is the increasing trend in population parameters that ensures that more organisms are produced.
The birth rate is the chief factor that populates an area.
When birth rate increases, new and younger organisms are produced and this tips the population towards a very young age.
An ageing population is one where the birth rate is quite low.