Consider this:
Each parent has two sex chromosomes.
The mother, as a female, has chromosomes XX.
The father, a male, has XY.
The mother will pass on one sex chromosome to the baby, as will the father.
The mother can only pass on an X.
The father, however, has a 50/50 chance of passing on an X or Y.
XX would make a female and XY would make a male.
Simply put, the sex chromosome from your mother is fixed, it's going to be an X no matter what. It's which sex chromosome your father passes on that determines your sex.
Answer: 4)Biomes
Explanation:
Groups of ecosystems that have the same climate and dominant species
are known as biomes, e.g. tundra or rainforest biomes.
Answer:
the level of carbon dioxide in Earth's atmosphere has been rising consistently for decades and traps extra heat near the surface of the Earth causing temperatures to rise
Basalt, pegmatite, granite, slate, sandstone, limestone, shale