Answer:
D. Na has one fewer valence electron than Ca.
Explanation:
Elements in different groups has been grouper based on the number of valence electrons they possess. Valence electrons refers to the electrons at the outermost part of the shell of an atomic element.
Sodium (Na) belongs to group 1 on the periodic table meaning that it has one number of valence electrons while Calcium (Ca) belongs to group 2 meaning that it has two number of valence electrons. Hence, Na has one fewer valence electron than Ca.
Answer:
population density is the answer of the question
Answer:
Fossils are the preserved remains, or traces of remains, of ancient organisms. Fossils are not are the remains of the organisms, they are rocks. A fossil can preserve an entire organism or just part of one. Bones, shells, feathers, and leaves can all become fossils.
Explanation:
Fossils are an remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in the earths crust.
Answer:answer in explanation
Explanation:They are the integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive systems.
Answer:
Compound microscopes have more than one lens to generate high magnification images of flat, thin specimens. There are three major structural parts of a microscope: Head, Base, and Arm. ... The light is then collected and formed an image by an objective lens. We see the magnified images through the eyepiece
Explanation:
