I think the correct answer would be A. The yolk sac becomes the placenta. It is membranous sac that is attached to the embryo. It provides all the nutrition and the blood cells needed by the embryo. It is also called the umbilical vesicle.
<u>Complete Question:</u>
Water pollution and air pollution in an area have been steadily increasing. What can students do to address these environmental hazards?
_______ to educate other students about the deteriorating environmental conditions and the steps needed to improve the area. Also, encourage other students to volunteer for workshops about _______.
1.
A. Pass Laws
B. Organize Seminars
C. Create a Tax collection program
2.
A. Recycling and waste disposal
B. Poaching
C. Deforestation
<u>Correct Option:</u>
<u>Organize seminars</u> to educate other students about the deteriorating environmental conditions and the steps needed to improve the area. Also, encourage other students to volunteer for workshops about <u>deforestation</u>.
<u>Option:</u> B and C respectively.
<u>Explanation:</u>
As the environmental conditions are deteriorating day by day, thus it is necessary to train to boost upcoming generation for preserving it in most appropriate manner. For such actions awareness is necessary which should be encouraged by some volunteers of non-profit organization, environment protecting units of state and central, etc to conduct seminar in colleges and schools for students to make them understand the need of plantation and disadvantages of deforestation. The pattern to aware them should be remarkable, in order to create huge impact on the new generations towards green land.
Answer:
All responses are correct
Explanation:
1- This process of chemical extraction produces release of toxins that are toxic to other life forms
2- Sponges are critical organisms in the nutrient cycles
3- Sponges provide habitat for other species (fish, crustaceans, etc)
4- Sponges have the ability to regenerate when they are separated into pieces
The doctor is recommending the intake of a serotonin agonist that will activate the <span>5-HT receptors. There are several agonists for these receptors being </span>Lorcaserin one of the most used ones in <span>weight-loss</span>, which is a selective agonist for
receptors.