Answer: D). Uterus
Explanation: Fertilization occurs in the fallopian tube. Fertilization is the fusion of a sperm and an egg to form a zygote. The zygote moves down the fallopian tube to the uterus where it gets embedded into the wall of the uterus. Its attachment to the uterine wall enables the embryo to develop. If the embryo fails to attach itself to the wall of the uterus, the pregnancy will be aborted.
Answer:
Chemically gated Na+-K+ channels
Explanation:
The acetylcholine receptors are the receptors or ion channel proteins which are considered the transmembrane proteins. The acetylcholine receptors are of two types depending on the ligand which binds that is either nicotinic or either muscarinic receptors.
When the acetylcholine binds the receptor molecule, the ion channels open up and allows the passage of the sodium and potassium ios which depolarizes the membrane potential and generates the action potential in the neuron.
Thus, Chemically gated Na+-K+ channels is correct.
Answer:Human population growth impacts the Earth system in a variety of ways, including: Increasing the extraction of resources from the environment. These resources include fossil fuels (oil, gas, and coal), minerals, trees, water, and wildlife, especially in the oceans.
Explanation:
Answer:
Treatment of industrial effluents through the extraction of pollutants before discharge to the rivers
Explanation:
Water contamination is the addition of undesirable materials into rivers, lakes and other bodies of water. Polluted water is unclean and unsafe to use therefore policies are designed to reduce water contamination that possesses risk to human health.
The fact that monotremes, such as the platypus, lay eggs "indicates that they are more closely related to reptiles than to other mammals".
<u>Option: D</u>
<u>Explanation:</u>
The explanation that unusual, egg-laying mammals still exist today might be because of their descendants have taken to the water. The oviparous mammals, the word itself suggest something unique — the monotremes, such as the platypus, understood as eccentric relatives of the majority of the mammals that carry young living.
Other traits, apart from laying eggs, make them look more like reptiles than our family. They have a reptilian gait with legs on the sides instead of under the body, and a single opening for urine, feces and sex instead of multiple outlets.
