Answer:
in placenta mammals the mother provide food through placenta
1.) Exocrine gland is a gland that makes up substances such as tears, sweat, milk, and saliva, and then releases them through a opening to a body surface.
2.) Two types of exocrine glands found in the skin would be (eccrine sweat gland and sebaceous glands).
3.) When internal temperatures rise the sweat glands secrete water to the skins surface, where heat is being removed by evaporation.
4.) The main function of the sweat glands is to control body temperature.
5.) The secretion of the sebaceous glands is to produce and secrete sebum, a group of complex oils including fatty acid breakdown products, cholesterol, and wax esters. It’s purpose is to lubricate the skin to protect against friction and makes it more impervious to moisture.
so babies can explore without fear of choking or eating something harmful
