There are three major categories of living things based on how they obtain energy, namely producers, consumers and decomposers. The organisms of a food chain vary according to ecosystems, for example, the organisms of a tropical ecosystem and an arctic ecosystem are different. The interactions betw...
What organelles are cellular structures were common to all the different organisms looked at with the microscope? What are cells that have no defined nucleus or other organelles called? What are the major organelles in a cell? What are their functions?
What three structures are found in the cells of all organisms, both prokaryotic and eukaryotic? Which of the following is a cellular characteristic of all eukaryotes? a. a nuclear membrane. b. a nucleoid. c. few to no organelles in the cytoplasm. d. a cell wall. e...
(protect)theirbabiesfrombacteriaandotherorganismsmightwanttocutback theirefforts. Anewstudysuggeststhathighlevelsofcontact withcleaningproductsarelinkedto2. increasedriskofthechildhoodbreathingcondition 3. (know)asasthma(哮喘). 4. (researcher)askedagroupof parentshowoftentheyused26commonhouseholdcleanersduringtheir...
Conscious experience is a widespread phenomenon. It occurs at many levels of animal life, though we cannot be sure of its presence in the simpler organisms, and it is very difficult to say in general what provides evidence of it. (Some extremists have been prepared to deny it even of mamm...
The Earth is divided into four interconnected spheres, one that is biotic and three of which are abiotic. Biotic sphere The biotic sphere, known as the biosphere, encompasses all living organisms. This includes a vast diversity of life forms, from microscopic bacteria to towering trees, as well...
So, how do we do this? Comets are made of ice and dust.那么，我们该怎么做呢？彗星是由冰和尘埃构成的。We make some ice. We chose three molecules likely to be in such ice, water, methanol and ammonia.我们做了一些冰。我们选择了三种可能存在于冰中的分子，水，甲醇和氨。The water first?
The circulatory system is responsible for transporting nutrients and oxygen around the body to where they are needed, and for protecting the body against disease-causing organisms. These two functions are sometimes classed separately as the cardiovascular, and lymphatic, systems, respectively. The cardio...
What are centroacinar cells? What do centroacinar cells do? What cell makes the meristem regions of plants? What cell parts do animals have that plants don't? In how many cells are the functions of unicellular organisms performed? What is made up of one cell?
What Are the Three Main Categories of Agribusiness? Agribusiness can be split into three major categories—agriculture, livestock, and forestry. Agriculture includes activities like planting and harvesting crops. Livestock concerns raising animals for products like milk, eggs, or meat. Forestry involves ...