Ectoderm refers to one of the three primary germ layers found in the initial phase of an embryo. The other two layers are the endoderm (the most proximal layer) and the mesoderm (the middle layer), the ectoderm is the most distal or the exterior layer. It originates from the external layer of germ cells.
Generally, ectoderm in vertebrates further develops into the brain and the nervous system, and into the parts of the skin. So, in the given case of the mouse, one would easily find the marker in the nervous system and in the epidermis.
Answer:
B) Female condoms
Explanation:
Genital herpes is caused by herpes simplex virus. It is a sexually transmitted disease i.e. it spreads by sexual contact between an infected and a normal person. It results in itchy and painful blisters around external reproductive organ .
The best way for Jill to avoid it is to avoid sexual contact or else a physical barrier can be created during sex so that the virus does not come in contact with her external reproductive organ . Out of the given options only female condoms can provide that physical barrier. Other methods wont be able to prevent the direct contact of their reproductive organs . Hence, female condoms are the best choice to avoid genital herpes.
Answer:
D
Explanation:
Geothermal energy utilizes the natural heat of underneath rocks to heat water to steam. The steam is then used to turn turbines and generate electricity. The water is usually recycled by being injected back to the ground to make sustainable use of the water. However, this process of injecting water in the ground may contaminate the groundwater in aquifers. The water can, therefore, be unsuitable for human use such as watering of plants and animals including household use.
Answer:
Dispersion of white light by a prism
Explanation:
When white light is passed through a prism, the white light separates into its component wavelengths which are:
Red
Orange
Yellow
Green
Blue
Indigo
Violet
Together, all of these wavelengths constitute the spectrum of white light.
Hence, the dispersion of white light shows that each color of visible light has a specific wavelength.
Archaeologist
hope it is correct