Answer:
Combustion
Explanation:
Combustion is the chemical reaction that happens when fuel burns.
Answer:
Explanation:
Plants, algae, and some kinds of bacteria have the ability to photosynthesize. They have special organelles called chloroplasts.
These organelles are the site of <u>photosynthesis</u>. They contain green pigment known as chlorophyll which can capture sunlight. The light energy plus carbon dioxide and water are converted into glucose and oxygen.
The glucose becomes the organism's food and energy source, but the oxygen is just released as a waste product.
Answer:
C.The gametophytes grow directly from the sporophyte
Explanation:
Conifers are gymnosperm which reproduce through the exposed seeds (seeds not included in fruits) found in the cones. The trees or plant on which these conifers grow are called sporophytes. In the sporophyte, the male and female gametes fuse together to form zygote which further develops into a seed. At the right time, these seeds get dispersed into wind and they grow into new plants known as sporophytes
Answer:
11B (reproduce). 12C (be eaten). 13A (variation). 14C (better adapted). 15C (Darwin). 16A (evolved). 17C (competition).
Explanation:
11 - The key principle underlying evolution by natural selection is that traits are only passed on if the organism survives long enough to reporduce. An adaptation that increases its likelihood of survival will therefore increase the chance it will reproduce.
12 - Deer rely on their brown fur to remain camouflaged in the forest so that predators can't see them. A white deer will stand out and will be seen by predators and eaten.
13 - This is the definition of variation. The variation becomes an adaptation if it actually benefits the organism in some way in its environment. A variation could also be neutral (doesn't affect the organism) or deleterious (bad).
14 - See previous question.
15 - Darwin developed the theory.
16 - This is describing the process of evolution.
17 - This is an example of competition.
Answer:
Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind.
Explanation:
