Layers in earth's atmosphere are defined as region in
a.) air mixes together
b.) different types of weather occur.
c.) planes cruise due to jet stream currents

d.) the temperature of the air remains the same.

Answer: D.) The temperature of the air remains the same.

The division of Earth's atmosphere into different layers is achieved by using the temperature as the main factor. Thus, our atmosphere is divided into five disting layers: exosphere, thermosphere, mesosphere, stratosphere and troposphere.

The exosphere is the outermost layer as well as the least dense. It contains so few oxygen and hydrogen atoms that they rarely collide with each other. The troposphere is the layer closes to the Earth's surface and it contains most of our weather.

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.