Felipe made a toy boat out of clay, but it kept sinking in water. he changed the boat's design by making it slightly wider than before. why did felipe's newly designed boat float on water? (a) he decreased the density by increasing the volume. (b) he decreased the density by decreasing the volume. (c) he increased the density by increasing the volume. (d) he increased the density by increasing the volume.

The answer is A because the boat is being spread out which increases the total amount of space, or volume. The density is decreasing because the same amount of clay is being spread out over a wider surface. (Density is mass/volume and the mass is still the same but the volume has become smaller so that means that the density is also smaller)

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

Essential for a scientist to do for credibility

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.