Ответы 2
-
.......(3x^2y):(7x^2)
-
Автор:
paul84 - 5 лет назад
-
0
-
-
3х^3/7у^5;.............
-
Автор:
kimberlynguyen - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
- при каких значениях х выражение 9х+7 меньше значений 8х-3
-
помогите решить,пожалуйста
площадь треугольника авс равна 124. ДЕ-средняя линия. Найдите площадь треугольника-
Предмет:
Геометрия -
Автор:
cricketu4cp - 5 лет назад
-
Ответов:
0 -
Смотреть
-
-
VI. Прочитайте и переведите текст письменно.
Human Skeleton
The human skeleton is made of individual or joined bones (such as the skull), supported and supplemented by a structure of ligaments, tendons, muscles, cartilage and other organs.
The skeleton is not unchanging; it changes composition over a lifespan. Early in gestation, a fetus has no hard skeleton; bones form gradually during nine months in the womb. At birth, all bones will have formed, but a newborn baby has more bones than an adult. On average, an adult human has 206 bones, but a baby is born with approximately 270 bones. The difference comes from a number of small bones that fuse together during growth, such as the sacrum and coccyx of the vertebral column. An infant is born with pockets of cartilage between particular bones to allow further growth. The sacrum consists of five bones which are separated at birth but fuse together into a solid structure in later years. Growing is usually completed between ages 12 and 14, at which point the bones have no pockets of cartilage left to allow more growth.
Not all bones are interconnected directly. There are 6 bones, the auditory ossicles in the middle ear that articulate only with each other. Another bone, the hyroid bone in the neck, does not touch any other bones in the body, and is supported by muscles and ligaments; it serves as the point of attachment for the tongue. The longest and heaviest bone in the body is the femur and the smallest is the stapes bone in the middle ear. In an adult, the skeleton comprises around 20% of the total body weight.
The most obvious function of bone is to support the body. It also the site of haematopoiesis, the manufacture of blood cells, that takes place in bone marrow. It is also necessary for protection of vital organs. Movement in vertebrates is dependent on the skeletal muscles, which are attached to the skeleton by tendons.
-
Предмет:
Английский язык -
Автор:
gilbertmlzb - 5 лет назад
-
Ответов:
1 -
Смотреть
-
-
Помогите решить геометрию плиз. Надо найти координаты вектора и длину вектора.
-
Предмет:
Геометрия -
Автор:
lilianwxjl - 5 лет назад
-
Ответов:
1 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35922 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
758
How much to ban the user?
1 hour
1 day
100 years