A vector of a zoonotic pathogen differs from a host of the pathogen in that it is not affected by the pathogen.
<h3>What are vectors and pathogens?</h3>
Vectors are organisms which serve as carriers of disease-causing organisms known as pathogen. Vectors usually serve as transport or transit mechanisms by which diseases spread.
Pathogen are organisms that cause disease. A zoonotic pathogen is a pathogen that can move from non-human animals to humans.
The vector of a zoonotic pathogen differ from a host of the pathogen in that the vector is not affected by the pathogen and the vector is also non-human.
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A soil sample from a temperate deciduous forest would be more nutrient rich that a sample from the tropical rain forest.
In the rain forest the tree tops form a canopy and the tops of trees absorb 90% of the sunlight and only 10% can get down to the understory which is the area under the canopy. The soil is very nutrient poor.
In a temperate deciduous forest there is no canopy so more sunlight can get to the soil. Which makes it more nutrient.
Both have cytoskeleton, vesicles, nucleus, nucleoli, rough and smooth endoplasmic reticulum, ribosomes, centrosomes, cell membranes, golgi apparatuses, mitochondrion, and vacuoles
Answer:
Replication occurs before a cell divides to ensure that both cells receive an exact copy of the parent’s genetic material
Explanation:
Answer:
C) The continents were once connected.
Explanation:
All the continents were once part of the super-continent called Pangaea. Continental drift split it into fragments and led to the formation of the present-day continents. Since all the continents were connected, some of the cacti native to tropical western Africa must have been carried to present-day America.
The cacti populations present in America and tropical western Africa accumulated genetic variations to get adapted to the prevailing environmental conditions. Separation of continents by continental drift led to their geographical isolation and prevented any interbreeding between the populations. Over generations, the cacti present in two continents evolved into separate species.
