A basic tenet of modern biology, first stated by Matthias Schleiden and Theodor Schwann in 1838–39, that cells<span> are the basic units of structure and function in living organisms. ... A </span>theory<span> of heredity must be reconciled with the </span>cell theory<span>.</span>
Answer: C. Resources can be unavailable in areas where they are needed
Explain: resources on earth surface for an evenly distributed most resources are unavailable where they are actually needed. Foreign exchange and internal trade brings the resources into distribution between the nation.
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A mutation in either a hormone or its receptor might affect the physiological system that it normally regulates by either blocking hormone effect or creating a completely different effect.
Hormones can be called chemical messengers which coordinate distinct functions in the body. Many glands, organs and tissues produce and release hormones, many of which constitute the endocrine system.
A hormone will only act on a part of the body if it fits i.e. if the cells in the target tissue have receptors which can receive the message of the hormone. Given that hormones carry instructions in their structure, mutations alter their structures by changing nucleic acid sequences which blocks hormone function.
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The correct answer is - C. light.
The cloudy waters are waters where the visibility is very low. That is a result of higher amount of sediments or organic debris in the water. Because the water has low visibility, it means that the light can not reach very deep into it, only few centimeters on the surface of it. The plants, including the sea grass, are using the light for the process of photosynthesis which is crucial process for their survival as through it they are producing their own food, or rather the sugars. With the light being insufficient or lacking, the sea grass will die out in those parts, and will only be able to exist in the parts where there's enough light.
Answer:
The male reproductive system includes two testes, which like the ovaries, have a dual function.
Explanation:
They produce the male germ cells (spermatozoa) and the male hormones (androgens). The germ cells differentiate to morphologically mature spermatozoa in the seminiferous tubules within the testis.
