Growers may use methods of genetic engineering to promote soil health<span>, minimize </span>water use<span>, and lower </span>pollution levels<span> on the farm.</span>
When a pathogen comes in contact with your body, it has to breach the first line of defense to get inside. Your skin and mucus membranes are the main barrier here. Mucus traps the pathogens, and then is forced out of your body when you cough or blow your nose. Your skin also secretes chemicals that have antiviral properties, killing viruses on contact. If the pathogens get through that defense, the next line is non-specific immunity cells that patrol your tissues engulfing pathogens. There are other cells that do this, like macrophages, but the dendritic cells are most important for activating the third line of defense in your body.
Dendritic cells reside in your tissues, waiting for an invader to arrive. When they do find one, they engulf it and digest it. After they do this, they select pieces of the invader called antigens and put them on their surfaces. The dendritic cells migrate back to lymph nodes, key locations in your body filled with immune cells. There, they show the antigens, called antigen presentation, to two types of lymphocytes, T-cells and B-cells, activating them for a full immune response.
A. because if any population decrease, any other specie will decrease like a chain reaction
Answer:
A) Pluto has a tilted orbit
Explanation:
Pluto is a dwarf planet that lies in the Kuiper belt. The orbit of Pluto is an ellipse, and here the sun is not in the center. As compared to the other planets of the solar system, the orbit of Pluto is angled 17 degrees above the plane, where other planets orbit. It is the first object to be discovered in the Kuiper belt.
Answer:
There are 8 planets in our solar system. 4 are inner planets and the other 4 are outer planets. Our planet is the 3rd planet from the sun and we are the inner planets.
Explanation:
