The cladogram of the kingdom animalia shows the relationship of selected animals based on their shared anatomical features. the black numbered squares represent features that are critical for forming each branch in the animal kingdom. square one represents a dorsal nerve cord, which means the animals in all the branches have a dorsal nerve cord.

which numbered square would represent the trait "mammary glands? "

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

gold i'm pretty sure i might be wrong

not only is it colder, it also becomes darker, less salty, and more dense.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.