Natural changed to the ecosystem relate to environmental shock that occur naturally. Natural changes include floods, volcanic activity, hurricanes, etc. They can be destructive, but they also have advantages. Floods have the contribution of nutrients to the soil which was lacking. It can also relocate fishes and organisms living in bodies of water which improves the ecosystem.
B
Keep in mind that total energy in the beginning and after work remains the same according o thermodynamics theory that energy can't be created or destroyed.
Explanation:
Conversion of energy from one form to another is not 100% efficient. Even the transfer of energy from one object to another (work) is not 100% efficient. This also applies to cells. The inefficiencies are lost as heat energy. Examples of such work in the cells include active transport by cell membrane protein channels, metabolic pathways, and etcetera. Some energy in the hydrolysis of ATP to power these biochemical activities is lost as heat which is part of the reason we remain warm. This energy ends up being lost into the environment as heat (e.g even from sweating).
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Answer:it can be as a result of chromosomal mutation or gene mutation or variation as result of crossing over
Embryonic stem cells have not yet been differentiated into body cells
The functions of the organs during fertilization is illustrated below.
<h3>How to illustrate the function?</h3>
<u>Testes</u>: The testes are responsible for the production of the testosterone in males.
<u>Ovaries</u>: Ovaries are responsible for producing eggs for fertilization and they also produce hormones such as estrogen and progesterone.
<u>Vas deferens</u>: It helps in the transportation of mature sperm to the urethra in preparation for ejaculation.
<u>Semen</u>: It contains sperm cells that helps in the fertilization of female eggs.
<u>Uterus</u>: It helps in the nourishing and housing the fertilized eggs until the offspring is ready to be delivered.
<u>Seminal vesicle</u>: The function is to produce and store fluid which will eventually become the semen.
<u>Epididymis</u>: It carries and store the sperm cells that are created in the testes.
<u>Fallopian tube:</u> The function is to transport the ova from the ovary to the uterus every month.
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<u>Question</u>:
Discuss the function of the following organs:
Testes
Ovaries
Vas deferens.
Semen
Uterus
Seminal vesicle
Epididymis.
Fallopian tube.
