Answer:
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Explanation:
Hello. Happy to help.
1) Coast Lines: The location of marine fossils can help determine where and when ancient coast lines were in the past.2) Climates: Fossils can be used to determine the past climates. (Was an area cooler or wetter than the present.)
The presence of marine or land fossils indicates whether the land at one time was at the bottom of the ocean or not.
Also, you could mention radioactive dating and relative dating. I am sure that is mentioned in your curriculum.
Hope that helps.
Answer:
A plant that has two alleles for a trait.
Explanation:
<em>Took the test</em>
Answer:
Explanation:
The immune system protects the body from possibly harmful substances by recognizing and responding to antigens. Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens.
Your body's cells have proteins that are antigens. These include a group of antigens called HLA antigens. Your immune system learns to see these antigens as normal and usually does not react against them.
Answer:
b
Explanation:
the summer solstice is in June and it lasts until September, therefore while it's summer in the Northern hemisphere, its winter in the Southern.
