Scientists are trying to understand the composition of substances on
different planets, which best describes how scientists are probably working
on this problem?
a. scientists share information with other scientists who approach
the problem in the same way so that they get support for their
observations,
b. scientists with the same perspectives use similar experiments so
that they can compare results and draw the same conclusions,
o
c. scientists study the problem in the same way because they have
similar backgrounds and share information with each other.
o
d. scientists with different perspectives approach the problem in
various ways, but they all make observations and look for patterns.

listen, you cant how young you were.

"you didn't chose the stud life. the stud life chose you."

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

explanation:

to improve her experimental investigation, dalila should add a row in which no fertilizer is used. by a having a contrasting row in which no fertilizer is used, she will have a control group that will her understand the effects of the fertilizer in the plant developments vs the development of the plant when no fertilizer is used.