Index fossils (also known as guide
fossils, indicator fossils or zone
fossils) are fossils used to define
and identify geologic periods (or
faunal stages).
Answer:
Explanation:
The homozygous yellow seeds will be represented by AA and homozygous white plant will be bb (Therefore green seeds will be a and purple flowers B). So using a punnet square, the cross would be AAbb x AaBb
Explosive mechanism is a method of self dispersal of seeds by the plants. Some plants distribute their seeds by violently ejecting them so that they fall well away from the parent plant.
Can I please have brainliest.
The answer is B. This the systolic pressure of a giraffe in comparison
to that of a human that is 100 mm Hg. This
high blood pressure ensures that the giraffe maintains 100 mmHg in the brain.
Since a high BP impairs gas exchange and increases transpulmonary filtration,
the pulmonary circulation must be separated. Therefore, in the giraffe, there
is a relatively great difference between the right ventricular and left ventricular
maximal rates of pressure ascent, the left ventricular rate of ascent being 5
times that calculated for the right ventricle.
