12. Two methods of moving from place to place are represented below. The single-celled ameba moves by a process that involves the flow of cytoplasm.
Which statement is best supported by these diagrams?

(1) Both simple and complex organisms move directly by the movement of
cytoplasm.
(2) Single-celled organisms, like complex organisms, are able to move;
however, they differ in the way they carry out this activity.
(3) Cytoplasm is a fluid substance in simple cells and a solid substance in
cells of complex organisms.
(4) Cells in complex organisms function in the exact same way as cells in
simple organisms.

lithosphere and asthenosphere

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

l dont know l am s sorry

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.