Answer:
0.00568
Explanation:
Recall that the fraction of radioactive material left after a time (t) is obtained from the formula;
N/No = (1/2)^t/t1/2
Where;
N= mass of radioactive material left after a time t
No= mass of radioactive material initially present
t= time taken for N mass of radioactive substance to remain = 60.0 days
t1/2= half-life of the radioactive substance= 8.04 days
Note that the required fraction is N/No, hence;
N/No= (1/2)^60.0/8.04
N/No= (1/2)^7.46
N/No = 0.00568
Long answer here!
In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.
Answer:
Option B
Explanation:
Complete question -
Following their sixteen-week, closed-ended, grief and loss psychotherapy group with adults as reported by Price et al, which of Yalom's therapeutic factors was most identifiable?
a. recapitulation
b. altruism
c. universality
d. imagery
Solutions -
Out of the eleven therapeutic factors the one that will be easily recognizable will be the one which will involve some kind of action and interaction or any visible signs. Altruism would affect a person positively and help him/her to gain confidence. This confidence will be visible by the person’s action when he/she will help other people in the group to gain value and significance in the same way as he/she has done.
Hence, option B is correct
Placenta
It also does not allow the maternal and fetal bloodstreams to mix
Answer:
Primary productivity in an ecosystem is important because it lays the foundation of the food chains and food webs being observed in an ecosystem. It is the initial and main source through which energy is added into the food chains and food webs in an ecosystem. The organisms in which primary productivity occurs bring energy for the different organisms living in an ecosystem. Without them, energy will not be able to flow through an ecosystem as there will be no energy produced.
