Answer:
False
Explanation:
Before the Corona Virus every 10 seconds someone was born, every 5 seconds some one would die. (Approximately)
Now with the Corona Virus we are dropping dead like flies!
Answer;
-Antigen presenting cells
Explanation;
-Helper T cell and inflammatory T cell TCRs recognise epitopes displayed by MHC class II molecules on the surface of antigen-presenting immune cells, including: macrophages that engulf foreign particles such as bacteria; dendritic cells that present antigen to T cells; and B cells that produce antibodies.
-Antigen-present cells APCs engluf antigens, present fragments of antigens to be recognized by T cells
. Major types; dendritic cells in connective tissues and epidermis, macrophages in connective tissues and lymphoid organs &B cells.
Answer:
both require the total distance, but velocity also requires time and displacement. both require time, but velocity requires displacement and speed requires distance. speed requires displacement, while velocity requires distance.
Explanation:
The correct option which represents the point in Earth's revolution around the Sun when it is at aphelion is A. in early July.
Aphelion is a term which means 'farthest from the Sun,' which for Earth is around July 4th. Even though it seems weird, because you'd think it's cold when the Earth is so far away from the Sun, because the Earth's axis is tilted, everything is reversed - it is hot when it is farther from the Sun, and cold when it is closer to the Sun.
The cohesion – tension theory of sap ascent explains how how water is pulled up from the roots to the top of the plant. Evaporation from mesophyll cells in the leaves produces a negative water potential gradient that causes water and minerals to move upwards from the roots through the xylem.
