Please help thank you!

Based on the absolute dating of the rock layers in this photograph, what could a scientist conclude about a fossil found in area A?A.It is exactly 1.4 million years old.B.It is between 1.4 million and 2.1 million years old.C.It is more than 2.1 million years old.D.It is less than 1.4 million years old. I WILL GIVE BRAINLYIST TO FASTST PERSON WITH RIGHT ANSWER HELP ASAP

Evaporation of sweat requires energy and thus takes excess heat away from
the body. Some of the water that you drink may eventually be converted into
sweat and evaporate. If you drink a 20-ounce bottle of water that had been in the
refrigerator at 3.8 °C, how much heat is needed to convert all of that water into
sweat and then to vapor?? (Note: Your body temperature is 36.6 °C. For the
purpose of solving this problem, assume that the thermal properties of sweat are
the same as for water.)
Design a plan to solve this problem. What must be considered in order to solve
this? Explain it in words. Actual calculations are not needed, but can be included.

Why are large differences in temperature between the wet bulb and dry bulb thermometers are possible only at higher temperatures?

1 point
2. Due to its intricate network, minerals with sheet of tetrahedron do not
easily separate. *
True
False

A farmer is breeding his best livestock is and example of?

Which is the best explanation of why heat is released when
wood burns?

Select one:

A. Burning releases energy stored in chemical bonds.

B. Burning creates energy by increasing particle motion.

C. Burning destroys matter and creates energy from it.

D. Burning causes convection currents which create heat energy.

Which is an example of a constructive force?

How can a compound not conduct electricity as solid but do so when liquid?
HELP

Which pair of atoms can form an ionic bond?

A.

potassium (K) and fluorine (F)
B.

sodium (Na) and neon (Ne)
C.

fluorine (F) and chlorine (Cl)
D.

sodium (Na) and potassium (K)

help pleaseeeeeeeeeeee

All three types of worms that undergo asexual reproduction use which process?
binary fission
budding
fragmentation
spore formation

is ammonia a compound element or mixture

What is the ratio of the effusion rate of the helium to methane? (round to hundreds)

WILL VOTE BEST & GIVE 20 POINTS

When completing your laboratory experiment, you placed 25.00 g of copper in the
graduated cylinder. Then you noticed the water level mark was filled to 50.0 ml. The total
mass of all the components is 58.80g. Know that the density of water is 1.0 g/ml, calculate
the density of this iron sample. Show all work.

Which law represents a balanced chemical reaction?

A. Avogadro‘s hypothesis
B. Ideal gas law
C. Newton’s 1st law of motion
D. Newton’s second law of motion
E.Law of conservation of mass

Which of the following is NOT a clue that could indicate a chemical change?

A. Change in color
B. Mixing of reactants
C. Change in energy
D. Release of a gas
E. Formation of a precipitate

Ammonia (NH3) is produced in the human body as a waste product during the digestion of protein. How many moles of N2 will be needed to produce 87.00 grams of NH3?

N2 + 3 H2 ® 2 NH3

Magnesium bromide (one magnesium atom with two bromine atoms) has a
chemical formula of MgBrz. If you look at the total atomic mass of MgBr2,
does magnesium or bromine make up more of the mass?

they are exactly the same
it is impossible to tell
magnesium
bromine

What do many employers require of respiratory technician? Check all that apply.

-Basic life support certification
-A specialized respiratory certification
-A four year medical degree
-Certification from the national board of respiratory care
-Socialize training in pediatrics or geriatrics

in which part of the sun would the most helium be found?

PLEASE HELP ME ASAP

Which of the following is an example of an opposing force?
A
Gravity pulling a ball down a hill
B
Wind blowing a leaf off of a tree
с
Gravity holding a rock still on the ground
D
Water pushing against someone as they wade through a pool

Calculate the mass in grams of each sample.

4.68×1020 H2O2 molecules

How can scientists use stoichiometry to ensure that commercial products contain the components that manufacturers claim they do?

Scientists have disocovered a new virus that is very different from any known viruses. What type of matter is the virus most likely made of

plz help me swear will mark you brainiest

When the first ball in a Newton's cradle is pulled back and released, it causes the final ball to move. What does this example of mechanical energy show?
A. Mechanical energy is energy in motion
B. Mechanical energy travels in waves
C. Mechanical energy is stored energy

Animal and plant organs are organized into organ stystems much like organize your homework in

Light travel in __________ lines until reflected or refracted .

Unknown elements W and X formed the compound image during a reaction. If element W has one valence electron, element X most likely has how many valence electrons

What is the formula of a compound that has [1 mol Fe], [1 mol Ti], and [3 mol O]