The dairy cow will produce large amounts of milk in its lifetime. Production levels peak at around 40 to 60 days after calving. Production declines steadily afterwards until milking is stopped at about 10 months. The cow is ''dried off'' for about sixty days before calving again. Within a 12 to 14-month inter-calving cycle, the milking period is about 305 days or 10 months long. Among many variables, certain breeds produce more milk than others within a range of around 6,800 to 17,000 kg (15,000 to 37,500 lbs) of milk per year.

do cows have to stay pregnant to produce milk?

A: no

The thyroid gland, or simply the thyroid, is an endocrine gland in the neck, consisting of two lobes connected by an isthmus. It is found at the front of the neck, below the Adam's apple. The thyroid gland secretes thyroid hormones, which primarily influence the metabolic rate and protein synthesis. The hormones also have many other effects including those on development. The thyroid hormones triiodothyronine (T) and thyroxine (T) are created from iodine and tyrosine. The thyroid also produces the hormone calcitonin, which plays a role in calcium homeostasis.

is the thyroid part of the lymph system?

A: no

A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed:

is 4 cycle the same as 4 stroke?

A: yes

Less than 75 years after the discovery of gold in 1848, almost every grizzly bear in California had been tracked down and killed. One prospector in Southern California, William F. Holcomb (nicknamed ''Grizzly Bill'' Holcomb), was particularly well-known for hunting grizzly bears in what is now San Bernardino County. The last hunted California grizzly was shot in Tulare County, California, in August 1922, although no body, skeleton or pelt was ever produced. Two years later in 1924, what was thought to be a grizzly was spotted in Sequoia National Park for the last time, and thereafter, grizzlies were never seen again in California.

are there any more grizzly bears in california?

A:
no