How do scientists measure carbon dioxide levels from the past

Asked by admin @ 29/10/2021 in Chemistry viewed by 302 People

How do scientists measure changes in the levels of global atmospheric co2?

a. they have directly measured co2 in the atmosphere since 1758.
b. they measure co2 levels in water trapped deep in earth's crust.
c. they take ice core samples that allow measurement of co2 over hundreds of thousands of years.
d. a and
b.
e. a, b, and
c?

Answered by admin @ 29/10/2021

All of the above is your Answer.

When the level of arterial carbon dioxide rises above normal

Asked by admin @ 02/10/2021 in Biology viewed by 321 persons

When the level of arterial carbon dioxide rises above normal: Select one: a. exhalation lasts longer than inhalation. b. the brain stem inhibits respirations. c. respirations increase in rate and …

Why are scientists concerned about increases in atmospheric carbon dioxide

Asked by admin @ 04/12/2021 in World Languages viewed by 302 persons

Why are some scientists concerned about an increase in the amount of carbon dioxide in the atmosphere

Cyanobacteria increased the levels of carbon dioxide in the atmosphere.

Asked by maham237 @ 22/12/2020 in History viewed by 290 persons

Cyanobacteria increased the levels of carbon dioxide in the atmosphere. please select the best answer from the choices provided true or false

What is the melting and boiling point of carbon dioxide

Asked by admin @ 26/11/2021 in Chemistry viewed by 322 persons

Does carbon dioxide or water have a higher boiling point and why?

Blood alcohol concentration is a measurement of the level of

Asked by admin @ 07/11/2021 in Chemistry viewed by 269 persons

Blood alcohol concentration (BAC) is a measure of alcohol in your body, expressed as grams of alcohol per 100ml of blood. For a BAC of 0.05, every 100ml of your …

What effect do carbon dioxide methane have on earth temperature

Asked by admin @ 05/11/2021 in Biology viewed by 320 persons

What effect do carbon dioxide and methane have on Earth's temperature A. They trap heat in the atmosphere? B. They release heat from the atmosphere . C.They black beat from …

Where does the exchange of oxygen and carbon dioxide occur

Asked by admin @ 05/11/2021 in Biology viewed by 394 persons

Exchange of oxygen and carbon dioxide in the lungs occurs between the __________ and the alveoli. A. capillaries B. bronchi C. arteries D. veins

At which pressure would carbon dioxide gas be most soluble

Asked by admin @ 05/11/2021 in Chemistry viewed by 407 persons

A solution is a homogenous mixture of solute and solvent. there are different types of solutions. a carbonated drink is an example of a solution where the solute is a …

Oxygen and carbon dioxide are exchanged in the lungs by

Asked by admin @ 05/11/2021 in Biology viewed by 322 persons

Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by ________. a. diffusion b. filtration c. active transport d. osmosis Complete the following statement using …

How to determine the level of measurement for each variable

Asked by admin @ 28/10/2021 in Mathematics viewed by 288 persons

Determine the level of measurement of the variable. Positions of runners in a race. A nominal. B ratio. C interval D. Ordinal

Which of the following is not a level of measurement

Asked by admin @ 07/10/2021 in Mathematics viewed by 330 persons

Which of the following is NOT a level of measurement? nominal ratio qualitative ordinal

Why solid carbon dioxide is called dry ice

Asked by admin @ 25/08/2021 in Chemistry viewed by 326 persons

Why is solid carbon dioxide known as dry ice??

The breakdown of pyruvate to give carbon dioxide

Asked by admin @ 25/08/2021 in Chemistry viewed by 360 persons

The breakdown of pyruvate to give carbon dioxide, water and energy takes place in (a) cytoplasm. (b) mitochondria. (c) chloroplast. (d) nucleus. NCERT Class X Science - Science Chapter_Life Processes