Answer:
B
Explanation:
first it attaches to the host cell membrane
Answer:
im in 7th grade taking highschool classes so i cant help, but thx for the points
Explanation:
Answer:
"Manganese is a grey-white, hard and very brittle metal.
It tarnished on exposure to air and oxidized to manganese when heated."
Credits to: Yahoo
Carbon is most abundant in the <u>atmosphere</u> and <u>hydrosphere</u>.
Explanation:
In the atmosphere, carbon is mostly present in the gaseous state of carbon dioxide. Plants absorb atmospheric carbon through photosynthesis and prepare food which is used by other living organisms. Respiration by plants and animals returns carbon back to atmosphere.
Next to atmosphere, carbon is abundant in the hydrosphere dissolved in water. Aquatic plants and marine organisms absorb carbon dissolved in water to prepare food. This carbon is also used to produce shells and other marine structures.
Carbon is also present in lithosphere and biosphere.
Explanation:
Menstrual cycle is a complex cycle that consists of several processes. Order of occurrence of steps in menstrual cycle are as follows:
1. High progesterone levels maintain the endometrium lining of the uterus.
2. Endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release FSH and LH.
3. FSH and LH stimulates the follicles to develop and the oocyte to produce estrogen.
4. Rising estrogen levels suppress FSH production and development of other follicles.
5. A spike in LH causes follicle to rupture.
6. A breakdown of corpus luteum causes progesterone level to drop.
I hope it's helpful!!