Explanation:
Karyotyping is <u>a test to examine chromosomes in a sample of cells</u>. This test can help identify genetic problems as the cause of a disorder or disease.

<span>Cell Membrane which is a Selectively Permeable Membrane.
</span>
Answer:
Earth's atmosphere has a series of layers, each with its own specific traits. Moving upward from ground level, these layers are called the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The exosphere gradually fades away into the realm of interplanetary space.
Explanation:
Layers of Earth's Atmosphere | Center for Science Educationhttps://scied.ucar.edu
The answer is lithosphere.
Are you talking about the benthic zone?