Scientists

C.B. van Niel's hypothesized that the oxygen released by plants during photosynthesis comes from carbon dioxide. In the 1930s, he studied photosynthesis in bacteria that make their carbohydrate from carbon dioxide but do not release oxygen. One such group used hydrogen sulfide, rather than water for photosynthesis, as illustrated by its chemical equation:

CO2 + 2 H2S-->[CH2O] + H2O + 2S

Since no oxygen was released in these experiments despite the presence of carbon dioxide, he concluded that carbon dioxide is not split into carbon and oxygen, at least in these bacteria, which helped to disprove the prevailing hypothesis of his day.

From his experiment results shown below, he also conjectured that all photosynthetic organisms require a hydrogen source although the source varies.

Sulfur bacteria: CO2 + 2 H2s-->[CH2O] + H2O + 2S

Plants: CO2 + 2 H2O--> [CH2O] + H2O + O2

General: CO2 + 2 H2X--> [CH2O] + H2O + 2X

Van Niel also used his inductive reasoning to hypothesize that the oxygen given off by photosynthetic plants is derived from water as plants split water as a source of electrons from hydrogen atoms, releasing oxygen as a byproduct, which later proven true two decades later as his hypothesis was tested using an isotope of oxygen that acts as a radioactive tracer to follow the oxygen atoms during photosynthesis.

computer, graphical, physical, scientific, and verbal

100

yes

The repeated tests done by scientists to discover or demonstrate something is called experiments or a word is "replication."

William Harvey 1578-1642

i think the human race was made by god

Mary Ann Mantel discovered, or was believed to find the first dinosaur fossil in the 1800s. She found a tooth in apile of gravel by the side of the road, while her husband was on a house call. Her husband studied the tooth and was later found out it belonged to a dinosaur, or back then a giant herbivorous reptile.

The Father of Forensics is a bunch of ppl!!!

Like Lombroso is the father of Criminology (Cesare- ceasare Lombroso)

The first cops where in the days of Babylon under Hammurabi (4,000 years ago)!

And threz more!!!!

A lot more!!

So u have to give a category!!!

Bec their is

* Criminology * DNA Analysis * Ballistic Experts * Medical Examiners * Forensic Techs * Cyber Division * Much more

Calling a scientist "chief" usually gets a good response. Calling a scientist a chief is as rewarding for them to hear as calling a swimmer a "dolphin".

Anton Van Leeuwenhoek

Physical anthropology arose from archaeology and applied anthropology. Archaeologists find the remains of ancient buildings, tools, pottery, and other artifacts by which a past culture may be dated and described. Applied anthropology makes use of the research done by physical and cultural anthropologists in order to help governments and other institutions form and implement policies for specific population groups.

Curie was not part of the baroque era.

John Needham concluded that the theory of spontageous generation was wrong:)

the period that scientist believe HORTICULTURE began was in the LATE ARCHAIC PERIOD

After making thier observations, scientists study their data looking for what?

The results of an experiment are simply the raw data that the experiment produces. This raw data doesn't provide any indication of what the results actually mean. Thus analyzing the results gives us insight into what the raw data are telling us.

all the answers are correct a+

Uhh I think you are either confused or talking about the dichotomous key tree. It is something scientists use to identify cells and creatures and was invented by a swedish scientist named Carl Linneaus.

He was a meteorligst

she died after giving birth to her child

Henry Harris (b. 1925) was a professor of medicine at the University of Oxford, completing pioneering work in the fields of oncology and human genetics. Harold vur Hausen (b. 1936) received the Nobel Prize in Medicine in 2008 for his work concerning papilloma viruses.

one is antibiotics they are chemicals that can save lives the second one is penicillin it is when it separate material from the moled and the third one is fertilizersthey are chemicals that farmers add to there soil to help food grow.

from parents and school teachers

They learned alot about africa's life and culture.