Select all of the following that must be true in order for evolution by natural selection to be taking place: (you may select multiple answers)

Group of answer choices

Survivability: some organisms in a population will survive, some organisms will not

Heritability: traits must be able to be passed down from parent to offspring

Catastrophe: something in the environment must change suddenly, like a natural disaster or introduction of a predator

Selection/Advantage: survival and ability to reproduce depend on an organism's traits

Desirability: at least some organisms in a population must want or need to change

Variability: individual organisms in a population must have traits that are different from each other, like fur color, number of leaves, or tail length

Blendability: genes need to be mixed between males and females

i think the answer would d

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )

the ems is the abbreviation for the emergency medical services. it is a service provided by a group of medical professionals specialised doctors and other healthcare staff.

any one can call 911 in case of any medical emergency and a group of health care professional will come and give the treatment required. every day the ems staff receive many phone call, which are related to different types of medical emergencies, out of which 25-28% are exclusively related to the respiratory issues.

so, the correct answer is 25-28%.