Answer: Gravity and inertia
Explanation:
Answer:
Covering organs within trunk cavities
Lining trunk cavities
Explanation:
Serous membranes are layers of tissue that protect the organs. They prevent the organs from getting damage from friction which can occur as they rub against the cavity walls.
Serous membranes have two layers, the visceral layer and the parietal layer. The visceral layer covers the organs while the parietal layer covers or lines the cavity walls. In between these two layers, you will find a gap or cavity filled with serous fluid.
They cover organs like the heart, lungs, blood vessels (some of them at least), testes and other organs found in the abdominal cavity.
Answer:
c. The flea beetle can become an invasive species
Explanation:
An invasive species is a non-native species that is introduced to the population (for example by humans). Because they are non-native, they can disrupt the 'natural order' of things. I.e., they can change the function of the ecosystem, which develops naturally to result in a harmony.
In this example, the leafy surge is a good example of an invasive species, it was accidentally introduced and has grown out of control, damaging the range land. In an attempt to control this, we deliberately introduced <em>another non-native species</em>.
This is in an attempt to fix the original mistake. If it works, then great! But if the flea beetles don't actually eat the leafy spurge, and they reproduce so quickly... it means we have introduced an additional species that could also disrupt the ecosystems. This could then mean that the flea beetle becomes an invasive species.
As it is given in the question that both the plant belongs to same species and according to biological species concept, a species can be defined as the largest group of organisms in which any two two individuals of the opposite sex breed to produce a fertile offspring.
According to this the correct answer is D) They can produce offspring plants that also produce fertile seed.
Answer:
The reference value that is expressed as a percentage of total calories is called as % daily value.
Explanation:
The % daily value tells about the the nutrients which are present in a single serving of food. They are mostly present on the Nutritional Fact Label for foods. The standard for the % daily value is set to 2000 calorie. 2000 calories are required for a healthy adult diet. But even if a person has a calorie uptake lower or higher then that, he/she can still use the % Daily Value as a guideline.
For example, If 2% vitamin C is written on a label than it defines that one serving of that product supplies 2% of the vitamin C that you require each day.
