Chloroplast Is the answer
Answer: X
Explanation:
Because we see 2 X's in the karyotype, that means that this person can only give an X to their son, who is XY.
Answer:
(B) Thomas Malthus, who studied population growth
Explanation:
Thomas Malthus published his essay entitled "An Essay on the Principle of Population As It Affects the Future Improvement of Society" in 1798. Accordingly, the capacity of populations to increase geometrically leads to struggle for food, shelter and other resources. These negative processes put a check on the population size.
Darwin was influenced by the idea of ability of populations to exhibit exponential growth and struggle for existence. On the basis of the essay by Thomas Malthus, Darwin proposed that genetic variations allow only individuals with beneficial traits to survive the struggle.
I believe it is A, I’m torn between A and D but I’m not sure.
Answer:
Explanation:
In a cross-section of an adult tree trunk, the outer layer that interacts with the environment is called periderm (Layer D). The second layer that follows the periderm is the phloem (Layer C). The next layer is the cambium, which produces phloem cells and xylem cells (Layer B). The secondary xylem follows the vascular cambium (Layer A) and finally, the medulla is located in the middle of the trunk.
The secondary xylem proceeds from the vascular cambium activity. Its cells are orientated in different ways composing the vertical/axial system and the horizontal/transversal system. The secondary xylem is essential to the tree growth in high because of its resistance and the capacity to transport water long distances. Secondary xylem functions are to transport water and minerals through its vessels and tracheids, to provide support and resistance to the plant, and to store reserve substances.