Carbohydrates are built from the building blocks of Oxygen, Hydrogen, and Nitrogen.
So whats the answer. My best logical guess is D. Why would the turtle have to go above the water. If their living in a pond, then studying them above water makes no sense. So it's most useful if they are remaining underwater for many minutes at a time then reach for the surface, so that's the answer most likely, but i have no idea.
So... <em>D. A turtle may remain underwater for several minutes, but then surfaces for at least a brief moment.</em>
Answer:
1 stomach- Digestive
2. brain-Nervous
3. heart-Cardiovascular
4. kidneys- excretory
5. bone marrow- lymph
6.Pituitary gland- Endocrine
7. xylem-vascular tissue
8. bones-skeletal
9. Fallopian tubes-Reproductive
Explanation:
The correct answer is a. prenatal abnormalities.
Any agent is able to affect the development of a fetus or an
embryo negatively is a teratogen. They can cause birth defect in the baby or
put a halt to the pregnancy.
Answer:
The specific distant organ which is affected by a specific hormone secreted by a endocrine gland is called the target organ. For example, oxytocin secreted by the posterior pituitary affects the contraction of the walls of uterus resulting in parturition. Here, the uterine wall is the target organ.
Explanation:
- Endocrine system is a system of ductless glads that secrete and pour chemical messengers into the blood and control various metabolic activities of the body.
- Hormones are signal molecule that are produced by endocrine gland and are directly poured into the blood.
- According to current scientific definition : Hormones are low molecular weight, chemically heterogeneous non-nutrient substances which produced in trace amounts and act as inter-cellular signal molecules.
- Even though blood distributes hormones throughout the body, only specific target cell can respond to each hormone because only the target cell have receptors for binding with particular hormone.
