Answer:
it is D
What global climatic change gave gymnosperms an advantage over ferns?
A) Increased fluctuations in global climate
B) the climate becoming hotter and wetter
C) the climate becoming cooler and drier
D) the climate becoming hotter and drier
Answer:
reactions
Explanation:
Reactions occur when two reactant molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.
1.Movement.
All living things move in some way.
2.Respiration is a chemical reaction that happens within cells to release energy from food.
3.Sensitivity.
The ability to detect changes in the surrounding environment.
4. Growth.
5.Reproduction.
Excretion
6. Nutrition.
