Explanation:
under what circumstance does a negative cell presents An antigen to another negative cell
Low levels of water in the blood, causes more release of anti-diuretic hormone (ADH) into the blood. It causes increases in the retention of water in the kidneys, and thus, blood volume is increased. This may be caused by dehydration and leads to less volume of urine. It is released by the hypothalamus and stored in the posterior pituitary.
The Xylem transports minerals and water from the roots and the phloem transports food to other parts of the plant such as the leaves. They are both vascular tissues of the plant for the transportation of food.
Answer:d. Digitizer
Explanation:
A digitizer is a device that is used along with the stylus. A digitizer is used to convert the hand drawn images into a format which can be used by the computer.
The images are drawn on the flat surface along with the stylus that appears on the screen of the computer monitor. This device is used as glass cover over the screen of the monitor. This device is used to convert the analog signal to digital signals. This is used in non-touch screen laptops and monitors.
On the basis of the above description, the digitizer is the device which can be used along with the stylus to manipulate the screen.