DO NOT SEND ME PDFS!!!!!

Your 1 st section should be about reproduction in humans.

jekas [21]

The human reproductive system is different in males and females. When a sperm and egg join, the egg is fertilised and a baby starts to develop. Its mother provides all a baby’s needs until it is born.Fertilisation happens when an egg cell meets with a sperm cell and joins with it. The fertilised egg divides to form a ball of cells called an embryo. The embryo attaches to the lining of the uterus. It begins to develop into a fetus and finally into a baby.The mother’s lifestyle can affect the developing fetus. For example, smoking reduces the amount of oxygen in the bloodstream. This can lead to low birth weight and premature birth (when a baby is born too soon). Drinking alcohol during pregnancy can harm the developing baby’s nervous system, especially its brain.

Birth

It takes about 40 weeks for a baby to develop in the uterus. This time is called gestation. After this, the baby is ready to be born. The cervix relaxes and muscles in the wall of the uterus contract. Waves of muscle contraction push the baby out of the mother's body through the vagina.

4 0

3 years ago

What is the correct order of sedimentary rock formation?

Talja [164]

Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock. The latter two steps are called lithification.

5 0

3 years ago

I have a question for you guys

anzhelika [568]

Answer:

B. the birthrate of lions increases

Explanation:

5 0

3 years ago

Read 2 more answers

What is anemophroia,hydrochoria,anthropochoria and zoochoria?

Juliette [100K]

Answer:

also known as anemophobia, is an extreme fear of wind or drafts. It is rather uncommon, and can be treated. It has many different effects on the human brain. It can cause panic attacks for those who have the fear, and can make people miss out on regular everyday activities such as going outside.

In chemistry, a hydrochloride is an acid salt resulting, or regarded as resulting, from the reaction of hydrochloric acid with an organic base. An alternative name is chlorhydrate, which comes from French. An archaic alternative name is muriate, derived from hydrochloric acid's ancient name: muriatic acid.

Meaning of zoochoria in the Polish dictionary with examples of use. Synonyms for zoochoria and translation of zoochoria to 25 languages.

Anthropochore definition is - a plant that is regularly distributed by humans whether deliberately (as crop plants) or accidentally (as weeds).

Explanation:

8 0

2 years ago

There are 258 g of MgCl2/liter. What is the molarity of the solution?

Zolol [24]

Taking into account the definition of molarity, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

<h3>Definition of molarity</h3>

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

molarity= number of moles÷ volume

<h3>Molarity of the solution in this case</h3>

In this case, you know that the molar mass of MgCl₂ is 95.21 g/mole [molar mass is the amount of mass that a substance contains in one mole.]

You can apply the following rule of three: If by definition of molar mass 95.21 grams are contained in 1 mole, 258 grams are contained in how many moles?

amount of moles= (258 grams× 1 mole)÷ 95.21 grams

<u><em>amount of moles= 2.7098 moles</em></u>

Replacing in the definition of molarity:

258 g of MgCl₂/liter= <u><em>2.7098 moles of MgCl₂/liter</em></u>

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Finally, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

Learn more about molarity:

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3 0

1 year ago