The yolk sac functions to form blood cells in early development. provide nutrients to the fetus when the umbilical cord is disconnected. store metabolic wastes until the fetus is born. give rise to the primary germ layers.

Describe the successful biomanipultaion of Finland's Lake Vesijarvi.

What is meant by cremated cell

The amount of genetic variation produced during meiosis is related to (Select all that apply.) A - The number of chromesomes B - The amount og crossing-over that occurs C - The number of cells produced during a miotic division D - The size of the

Endocrine glands are responsible for A. Stimulating an immune response B. Regulating body activities C. Keeping the brain bathed in fluid D. Controlling body temperature

What are the five factors that can lead to evolution?

The growth rate of a local population is dependent on the birth rate minus the death rate and

If a volcano were to erupt and release large amounts of ash into the air, how would this affect the climate on Earth? a. The ash would increase the greenhouse gases, thus increasing temperature. b.

What is the purpose of implantation pregnany?

Ivy starts to get into the hot tub, but the water feels extremely hot. She stands in the water for a few moments, then slowly eases the rest of her body down into the water.

The differences between hashimotos' thyroiditis and grave's disease include b. only hashimoto's is a type ii hypersensitivity a. only grave's disease is an autoimmune disease c.