Like bacteria (prokaryotes), eukaryotic organisms can develop mutations in DNA that can affect traits, but these mutations are rare. Unlike bacteria, most multicellular organisms reproduce sexually- that is, two parents each produce cells called gametes that contain 1/2 the DNA needed for an
organism. When gametes from two separate parent organisms fuse to
form a single cell (zygote), that will develop into a juvenile, that is not
identical to its parents. Identify THREE events in the process of creating gametes and forming a zygote that result in this natural variation.

vote read

explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

i believe it would be the lungs.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

i don't know, but does anyone wanna be friends? i'm doing my homework at 1: 49 in the morning : /