Answer:
According to bottom-up and top-down control models of community organization, which of the following expressions would imply that an increase in the size of a carnivore (C) population would negatively impact on its prey (P) population, but not vice versa? D) P ← C
Explanation:
A community is defined by all the organisms living in the same area. In nature, theses communities are organized in a bottom-up or a top-down model. Bottom-up control is importante because of the association between many species and the supply of resources from the environment. The sources of top-down control is made of consumers and predators.
This hormone would be secreted when blood calcium levels decrease.
Negative feedback means to push in opposing direction, thus a decreasing calcium level will stimulate an increase in calcium.
Answer: The only three I know are
3.Embryonic stem cells. Embryonic stem cells come from human embryos that are three to five days old
2.Non-embryonic (adult) stem cells
1.Induced pluripotent stem cells (iPSCs)
Explanation: Sorry I don't know what other cells they create but I hope I helped. SORRY
Answer: c. ability to run
Explanation:
<h3><u>Answer;</u></h3>
half the sample to decay.
<h3><u>Explanation;</u></h3>
The half-life of a radioisotope is the amount of time it takes for<em><u> half the sample to decay. </u></em>
- <em><u>Radioactive particles or nuclides undergoes the process called radioactivity </u></em>which is the spontaneous decay of radioactive materials to emit radiation such as beta particle, alpha particle and also associated with energy loss.
- <em><u>Half-life is the time taken by a radioactive substance or material to decay by half of the original isotope to decay.</u></em> For instance; <em><u>when the half life of 100 g of substance X is 5 years, this means that after five years only 50 g of the substance would remain.</u></em>