12) its harder for the cell to move around due to the extra volume and mass
13) product; reactant
14)the nucleus
15)tissues comes before the organ
16) prokaryotic and eukaryotic
17) prokaryotes do not have a nucleus
18) cell
19) the bass
20) it allows needed materials to move in and out of the cell
21) DNA flagella and nucleus
22) the higher power objective
23)
Answer:
Fossils of Ambulocetus
Explanation:
Fossils of Ambulocetus show that it was about 3 meters long. It had hind legs which were more suited for swimming than for walking. It could hear very well under water, and its teeth resembled those of modern cetaceans. Its limb anatomy suggests that it was slow on land and in the water.
The controlled experiments are performed by the scientists, when they want to study the changes in the sample on changing a single variable. So, the correct answer is option (b).
In case, all variables are kept same, no changes would be observed in the experiment sample. A controlled experiment can be performed on living thing as well as non living. But, controlled experiment cannot be performed on the things which are influenced by a lot of variables, as they cannot create realistic results. So, the option (a), (c), and (d) are incorrect.
Answer: the earh was formed by GOD
Explanation:
