Which of these best describes extinction events?

answers are
a) extinctions are entirely caused by human interactions and disruptions to ecosystems.

b) extinctions are entirely avoidable if species are monitored and placed on an endangered list.

c) extinctions occur when speciation ceases to occur and environments become too cold for homeostasis.

d) extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted.

Extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted

Explanation:

Evolution has made it known to us that organism goes to extinction as a result of changes in ecological stress without being able to adapt by this organism to the new changes, hence; leads to extinction.

Charle's darwin theory of natural selection discuss about '' survival of the fittest'' when an organism fails to survive during harsh environment changes, it leads to extinction of such organism. Dinnosaur were able to go into extinction as a result of environmental changes which they are unable to adjust, thus; they went to extinction.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.