Answer:
The correct answer is option D. cube.
Explanation:
The image represent the cells similar to the epithelial cells whcih is found in various tissues such as muscle, nervous and many more. These cells are found in cuboidal, columnar and squamous sha[es which found in normally double layer or in multiple layers.
These cells are cube like in structure with a spherical nucleus present in the center of the cell known in assocation of various cells.
A dichotomous key is a 2 choice key. I believe this is the solution.
Basically ionic bonds can be formed between a metal atom and something called a radical ion. The radical ion could have covalent bonds within themselves, for example, CO3- is a radical ion.
Answer:
Amount of food. She needs to varry the amount of plant food among the different groups so that she can tell how the amount of plant food affects number of beans produced.