Water is the correct answer
Answer:
A compound is a chemical combination of two or more elements... water is made up of Hydrogen and oxygen hence the answer is water
The sequential order of reproductive stage and fertilization starts with the
male and female sex cells being produces through meiosis. The male sex
cell which is the sperm is produced in the testes while the female sex cell
which is the egg is produced in the ovary.
During copulation, the sperm cells are released into the vagina which then
swims through the cervix and uterus to the fallopian tubes where the
fertilization occurs.
There is then movement of the zygote formed from the fertilization to the
uterus where development occurs.
Please refer to the attachment .
Read more about Fertilization here brainly.com/question/1154065
Answer:
a. Damage is caused by free radicals that slow down the cell-duplication process.
c. Aging may be caused by the inevitable loss of the ability of cells to duplicate perfectly.
Explanation:
The free radical theory of aging states that aging is caused by accumulation of damage inflicted by reactive oxygen species (free radicals). It proposes that organisms age because they accumulate oxidative damage, Now,this damage comes from reactive oxygen species (ROS), which are partially reduced metabolites of molecular oxygen (free radicals) generated as products of metabolic reactions. Thus, these free radicals cause damage that slow down the cell-duplication process.
Also, Aging may be caused by the inevitable loss of the ability of cells to duplicate perfectly. (SENESCENCE).
When senescence occurs (i.e inevitable loss of the ability of cells to duplicate perfectly) there is progressive deterioration of physiological function, an intrinsic age-related process of loss of viability and increase in vulnerability of cells.
