The correct answer is c Cytoskeleton
Cyto means cell and skeleton is self explanatory, therefore, cytoskeleton provides shape of the cell, like normal human skeleton provides shape for us by carrying muscles.
Flex to the moon and back
Deforestation affects entire ecosystems, including the organisms that live in them.
In <em>rainforests</em>, deforestation has devastating effects. Wildlife diversity, for instance, tends to decrease as species are displaced from their natural habitats. Animals go to new places in search of shelter and food. In many cases, they die of hunger or are threatened with extinction due to the spread of diseases.
Deforestation also affects rivers, different streams of water and the soil. The soil, which provides essential nutrients for vegetation, is exposed to more sunlight and heavy rainfalls that erode it. Erosion makes the soil drier and infertile.
<h2><u>Full Question:</u></h2>
Which of the following would result in fraternal twins, who don't have identical DNA? A. Two sperm fertilizing a single egg B. One sperm fertilizing a single egg C. Two sperm fertilizing two different eggs that were released in the same cycle D. One sperm fertilizing a single egg that splits into two embryos
<h2><u>Answer</u>: </h2>
Fraternal twins do develop when two sperms do fertilize two different ova that are released at the same time of a menstrual cycle.
Option C
<h3><u>Explanation:</u></h3>
Twins are of two types - Monozygotic twins or identical twins, and Dizygotic twins or fraternal twins.
Fraternal twins develop rarely, when during the menstrual cycle of the would be mother, two ova are released by two ovaries. So, two sperms fertilize the two ova separately. These zygotes develop into two separate embryo in their own separate amniotic sac. Being developed from separate sperm and separate ovum, the twins have not much similar characteristics unlike identical twins.
Only the fraternal twins can have different genders, like one can be male and other female. Monozygotic twins are always of same gender.
Answer:
c. in large numbers on cells that secrete hormones.
Explanation:
cilia are eyelash like receptors that take in information within chemicals.
