BIOLOGY HIGH SCHOOL

Which conditions relate to the research of van Helmont

Answers

Answer 1
Answer:

The VanHelmont experiment consists of a measure of the amount of soil before and after a plant grows.

He wants to demonstrate the independence of soil.

After five years he measures the amount of soil and only 2oz gone from the initial amount of soil when the plant weight much more.

The conclusion was the plant use water to grow, and not the soil.

Afterward, he discovers CO2 but, not until the discovery of photosynthesis we all knew how everything in plants works.
Answer 2
Answer: Plant mass that is related to H20.

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10 Pts!!Why can only some people smell ant's. I googled it and I only found that some people can smell ant's, and some people can't and why they smell.This is a legit question. Don't delete i mentioned that i can smell ant's in class and part of the class said they could, and the other part couldn't. My teacher is having me find out why.P.S. For those who don't know, ant's have a chemical, rotten trash, mildew, sweet smell... idk but it's gross.

Where does one ocean stop and another start?

Answers

The ocean diesnt have a starting or stopping point. It is all connected. If this is a question for school or something it's a trick question.

The heart valves act like doors.


TrueFalse

Answers

its true as you breath your heart and lungs go in and out as if you were swinging a door open and shut letting oxgen in and out hope i could help :)

How are plate tectonics formed? How do we know they exist (list 4-5 pieces of evidence)? And what are the different boundries?

Answers

Tectonic plates are the result of the mantle cooling on the surface. At plate boundaries or "zones" occure, there are different reactions along the edges of them. Divergent is when two plates move away from one another allowing fresh molten rock to flow to the surface. This results in a volcano. Covergent boundaries are when plates come together, resulting in mountain ranges. Transforming boundaries are when they slide up against each other causing earthquakes. More examples of proof of plate tectonics is the changing of Pangea into the world as we know it and subduction zones that reveal fossils that were deeply buried under layers of earth.

Name the four factors that affect population growth. Then, explain how each factor contributes to population growth.

Answers

There are four major factors that affect population growth:


Birth rate: The number of births per 1000 people in a year. This has a positive effect on population growth. This makes sense, as people being born adds to the population.

Death rate: The number of deaths per 1000 people. This has a negative effect on population growth. People dying lowers the total population.

Immigration: The number of people entering the population. This has a positive effect on population growth. People entering the population increases it.

Emigration: The number of people leaving the population. This has a negative effect on population growth. People leaving the population decreases it. 

Birth rates, death rates, immigration, and emigration are the factors that greatly affect population growth.

The four factors that affect population growth are birth rates, death rates, immigration, and emigration. If the birth rate is higher than death rate, population tends to increase while on the other hand, if death rate is higher than birth rate then the population tends to decrease.

If more immigration and emigration occurs in a country then its population increases whereas decrease in population of that country from which they are migrated so we can conclude that birth rates, death rates, immigration, and emigration are the factors that greatly affect population growth.

Learn more: brainly.com/question/2556439

After the energy crisis of the 1970’s and the OPEC oil embargo, the US _______.

Answers

The Americans resorted to energy and gas-saving measures to cope with the embargo and the high price of oil.  The competition posed by non-OPEC members also contributed to the drop in oil prices and this affected the Arab economy who also took up austerity approaches to address the matter.  The prices of oil later stabilized in the 1980s.

Answer: the answer is A. Increased its dependency on foreign oil

Explanation: just took test.

Exposure to UV light stimulates the skin to produce which vitamin?a. A
b. B
c. C
d. D

Answers

Your body is able to produce its own vitamin D3 when your skin is exposed to the sun's ultraviolet rays, specifically ultraviolet (UVB) radiation. When UVB rays hit your skin, a chemical reaction happens: Your body begins the process of converting a prohormone in the skin into vitamin D.
Exposure to UV light stimulates Vitamin D to be produced
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