Which of the following is associated with the male organs of an angiosperm?
a. stamens
b. carpel
c. petal
d. stigma
a. stamens
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Researchers suggest that despite the trend observed, the depletion of oxygen from the atmosphere due to burning of fossil fuels is currently not a serious environmental concern
because the change in oxygen levels is small compared to the abundance of atmospheric oxygen, which is sufficient for survival of animals and humans. True or false. Severe declines in ocean plants (phytoplankton) due to ocean warming and acidification from dissolved CO2 (forming HCO3 - and CO3 2-) could potentially lead to larger decreases in O2 levels over time, thereby altering this conclusion. What will be an ideal response?
An example of a nonpolar signaling molecule is ____
a. epinephrine b. insulin c. testosterone d. growth factors e. neurotransmitters
Which of the following does not vary predictably with the depth of the aquatic environment?
a) dissolved oxygen b) temperature c) penetration by sunlight d) salinity
Assume that a base addition occurs early in the coding region of a gene. Is the protein product of this gene expected to have MORE or FEWER altered amino acids compared with the original gene with a base deletion late in the coding region? Explain
What will be an ideal response?