Answer:
<h2>
A</h2>
Explanation:
Testosterone is only found in males and absent in female.
Testosterone is a sex hormone in males which helps in development in primary s organs, sex accessory organs and many other organs.
Testosterone causing growth of the larynx in males only because in females this hormone is absent so sexual dimorphism was developing over time in these species.
Due to increase in growth of the larynx in males, result as adult male humans generally have large larynx and deeper voices than do adult female humans.
Answer:
Echinoderms play numerous ecological roles. Sand dollars and sea cucumbers burrow into the sand, providing more oxygen at greater depths of the sea floor. This allows more organisms to live there.
Explanation:
They are also economically important to humans due to their use in scientific research and education and also for food.
Answer: Her times at lunch were always faster, no matter what type of meal she ate.
Explanation:
Answer:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion
Explanation:
Answer:
The correct answer is -
a. -because the distribution of the phenotype decreases
b. -cross sunflowers with the most phenotypic variance
Explanation:
Artificial selection is the process of the breeding plant or animal to develop a selective or desired phenotype character in a particular plant or animal by selecting which individual plants or animals sexually reproduce.
-Variance can be understood by the difference of individual from general characters of the species or deviation from the mean, which suggests how different the measurements.
-If the distribution or dispersion remains the same the variance shows no change so if the dispersion shows a change or different range of the measurements, change in the variance also takes place.