A litter of pigs is born. Three are female, and three are male. Which set of symbols correctly describes the gender of each piglet? XX, XY, XX, XY, XY, XX XXY, XXY, XXY, XX, XX, XX

XX

XX

XX

XY

XY

XY

Explanation:

Most mammals use an X/Y sex determination system, like humans.

Males are XY and females are XX. Therefore, there will be three pigs with the XX chromosomes, as they are female. There will also be three pigs with the XY chromosomes, as they are male.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation: