Answer:
The correct answer is biological.
Explanation:
When any pathogen invades the body, it has to pass several lines of defence. The first barrier is the skin and mucous membrane which is a physical and chemical barrier. The second line of defence is the non-specific response by macrophages, neutrophils and interferon. After crossing these two barriers the third line of defence comes into action in which, the B- cells and T-cells act specifically on the pathogen and destroy it.
Answer:
by using springs instead of rods to allow the model atoms to vibrate in their positions
Explanation:i got it correct
Answer:
a
Explanation:
the kidney secretes an enzyme called rennin that helps to control blood pressure is not true the kidney does not secret rennin
Well the elements would be for weather climate is how hot or cold the atmosphere is, how many degrees above below freezing. But, for element of weather on a mountain top would be.."Humidity" is defined as how much water vapor is in the air. The state in which water is a gas is defined as "water vapor." Humidity is used to predict the chances of precipitation, dew or fog in the atmosphere. It is also Full Answer
The temperature element is the numerical measure of air in the atmosphere. Temperature is found using a thermometer and can be in Fahrenheit or Celsius. The temperature of the air has an effect on the rate of evaporation in the atmosphere, the amount of humidity and what form precipitation is in. Any state of water that falls from the sky is defined as "precipitation." This can be rain, sleet, snow or hail.
Answer AND Explanation:
Let B represent blue and R red flower.
B B
R RB RB
R RB RB
Therefore the first generation produced all purple flowers RB.
R B
R RR RB
R RR RB
In the second cross, the genotype ratio for RR: RB is 2:2
The phenotypic ratio is 2 red: 2 purple flower.
