Where Ao = starting amount, At = amount after time t, and k = rate constant
<span>You are given that the half-life is 33 seconds </span>
<span>Calculate the rate constant </span>
<span>ln(2/1) = kx33 sec </span>
<span>0.693 = kx33 </span>
<span>k = 0.0210 s^-1 </span>
<span>Now calculate the amount left after 43.2 sec </span>
<span>ln(100%/A1%) = 0.0210 x 43.2 </span>
<span>ln(100/A1) = 0.9074 </span>
<span>100/A1 = 2.478 </span>
<span>A1 = 40.4%</span>
I believe the answer would be A) the fetus does not have fully developed lungs. When a baby is born at 32 weeks or less, there is a higher chance of the baby being born with respiratory problems because of the lungs being premature. Hope this helped!
Answer:
Hey bro Ur answer is A)
Explanation:
The definition of an ecosystem is that ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
The tomato plants, the fungi, and the soil all interact to sustain each other.
This is the mucus membrane.
Mucus membranes are found lining the body canals and cavities that lead to the outside namely the respiratory tract and digestive tract as well as the urogenital tract.
Mucous membranes secrete a sticky substance called mucus which is made of a monopoly saccharide called mucin.
The mucus traps pathogens and other particulate matter, preventing them from getting to deeper tissues. Once trapped, these unwanted foreign intruders are expelled outside of the body with the mucus, or swallowed into the stomach where they are destroyed by the strong acid there.
Sandy soil because it's particles are loosed
