What type of events would species diversity fortify against?

a
disease
b
climate change
c
natural disasters
d
A and B are correct
e
all of the above

Option E, All of these

Explanation:

Diversity in species is caused by change in the gene flow. All the catastrophic events mentioned here will change the genetic pool (either reduce it or increase it)as the species will die or modify themselves to survive through  such catastrophic events thereby changing the genetic diversity. Now the new set of population will have organism that have the ability to survive any potential catastrophic event.

Hence, option E is correct

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.