The answer is A) Density and temperature. Hope it helps and I am 99% sure it is right.
They're plant cells. The green organelles should be chloroplast. They're responsible for photosynthesis.
Answer:
I. They produce many offspring in a short period of time II. They have very low survivorship early in life
Explanation:
The r-selected species are the ones who produce the maximum number of offspring as quickly as possible when the resources are abundant. The individuals of the r-selected species have a small body size and exhibit early maturity. They have a short life span and provide little or no parental care to the young ones. Therefore, the survival chances of the young ones in the early stages of life are very low.
These species are found in variable, temporary, or unpredictable environments. Some examples of r strategists are insects, such as mosquitoes, and common weeds, such as the dandelion that produce a large number of offspring as the favorable growth conditions arrive.
Shortsightedness refers to the situation where the eyeball becomes to long so therefore light extends the retina and the persons finds it difficult to view things near him.It can be cured by using concave lens
Answer:
e) all of the above are methods of hormone action
Explanation:
Hormones are the chemicals that are secreted by endocrine glands mostly. They serve to regulate physiological processes. Most of the lipid-soluble hormones such as steroid hormones enter the target cell to bind to their cytosolic or nuclear receptors and alter the expression of genes. These hormones stimulate the expression of some genes and inhibit that of others.
Binding of hormones to the cell surface receptors associated with ion channels regulates their opening and closing and thereby affects the membrane permeability. Likewise, the active hormone receptor complexes regulate the electrical signaling pathways of muscles and neurons.
