4,3 of two the between difference the to sent PaulRegards1,2,4Ode3,
Answer:
- The american male BullDog can weigh up to 75-100 pounds while the female bulldog can weigh up too 60 to 80 pounds.
- The Life expectancy of a american Bulldog can be up 10-12 years.
- Generally the American Bulldog skin is 52 to 70 centimeters, but it can go overboard.
- The American Bulldog barking can be up 80-90 decibels.
Explanation:
Answer:
B: humans inhale oxygen from plants which is used in cellular respiration to produce water
Explanation:
Answer:
PROTEINS!
Explanation:
Amino acids, often referred to as the building blocks of proteins, are compounds that play many critical roles in your body. They're needed for vital processes like the building of proteins and synthesis of hormones and neurotransmitters.
Answer:
The correct option is B. Activation energy
Explanation:
The activation energy is usually used to designate the minimum energy necessary for a given chemical reaction to occur, that is, the basic requirement for the reaction to proceed.
For a reaction to occur between two molecules, they must collide in the correct orientation and have a minimum amount of energy. As the molecules approach, their electron clouds are rejected. This requires energy (activation energy) and comes from the heat of the system, that, is, from translational, vibrational energy, etc of each molecule. If the energy is sufficient, the repulsion is overcome and the molecules are close enough for a rearrangement of the bonds of the molecules.
The concept of Activation energy was introduced by Arrhenius in 1889. Arrhenius suggested that molecules must prossess a minimum amount of energy to react. That energy comes from the kinetic energy of the clliding molecules. Kinetic energy serves to cause reactions, but if the molecules move very slowly, the molecules will only bounce when they collide with other molecules and the reaction does not happen. In order for the molecules to react, they must have a total kinetic energy that is equal to or greater than a certain minimum value of energy called activation energy.
