True, pulmonary arteries carry the blood from the heart, while pulmonary veins return the blood to the heart.
2 strands of DNA=hydrogen bonds
2water molecules=polar convalent bonds
NACL=ionic bond
H2=ionic
Answer:
3.45g/cm³
Explanation:
The density of a substance/object can be calculated by using the formula:
Density = mass/volume
Where;
Density = g/cm³
Mass = grams
Volume = cm³
According to this question, a student measured the mass and volume of an object using a triple beam balance and a graduated cylinder. The sample has a mass of 22.4 grams and a volume of 6.5cm³.
Hence, the density of the object can be calculated this;
Density = mass/volume
Density = 22.4/6.5
Density = 3.4461
To the nearest hundredth, the density of the object = 3.45g/cm³
Age of fossils is determined by carbon dating method. A body has some carbon atoms which usually decrease on the death of a body
Answer:
C. minimal intensity needed to just barely detect a stimulus.
Explanation:
Absolute threshold is one of the most important terms in psychophysics and refers to the minimum threshold for a stimulus to cause a sensation.
In other words, the absolute threshold is the minimum amount of energy for a stimulus to be detected in at least 50% of attempts. The higher the absolute threshold, the lower the sensitivity to stimuli.
