A compound is a combination of one or more elements that are bonded chemically. Examples are ozone (three oxygen atoms), water (two hydrogens and one oxygen), carbon dioxide (one carbon and two oxygens), and nitrogen gas (two nitrogen atoms)
<span>Be careful of some elements that combine with themselves in pairs to form compounds. Hydrogen, for example, is an element which you can see in compounds like water and methane, but when hydrogen atoms are floating around by themselves they pair up to make a diatomic molecule (H2). Hydrogen gas is made of pairs of hydrogen atoms (a compound), not individual free-floating atoms. Other elements behave like this too (helium, chlorine, oxygen, nitrogen, and iodine are examples).</span>
Answer:
Pollination is a form of sexual reproduction and adds new gene combination to the progeny. These new gene combinations impart new genetic traits to progeny.
Explanation:
Pollination includes landing of pollen on the stigma of the same flower or another flower of same species. Since it is followed by fusion of male and female gamete to form an embryo, new gene combination and new genetic traits are imparted to the progeny.
Since the Dr studies genetic traits, sexual reproduction in the plant would allow him to observe more genetic variations in the traits.
Answer:
Natural selection leads to evolution.
Answer:
The reactants and the products of photosynthesis and cellular respiration are the same but switched around.
Explanation:
For photosynthesis light energy, carbon dioxide, water are needed to create glucose and the<em> waste product</em> is oxygen. But for cellular respiration the things needed to create energy to move around are oxygen and glucose. Mitochondria (aka the powerhouse of the cell) breaks down the glucose to make ATP energy (Adenosine Triphosphate). Plants store some leftover oxygen for cellular respiration. So basically, photosynthesis and cellular respiration kinda depend on each other.
Always melt chocolate slowly, at a low temperature. The melting point of chocolate is between 86 degrees F. (30 degrees C.) and 90 degrees F.