The answer is 1000% D) Plant cells, take in small molecules through the cell membrane
Explanation:
the group of people who rule or control a country.this is called government
Tundra and deserts are two biomes of the world which represent the extreme form of climates. Tudra is the coldest region of the earth while desert represent the hottest zones of the earth. But whats the most common thing in these extreme zones is that they receive very less precipitation throughout the year (less than 25 cm).
Therefore, flora of the desert and Tundra have some special adaptations to survive without sufficient amount of water.
Let's see what are those:
- The height of plants growing in Tundra is very less like lesser than 1 foot. The short structure of the plants helps them to get more heat from the dark soil and helps to survive freezing. The short height lets them stay protected from harsh effects of cold or snow.
- The plants in tundra grow in groups or clumps that helps them in surviving the attacks of ice particles or snow balls. For example: lousewort and Arctic crocus.
- Some flora of tundra has ability to grow even in the complete lack of water for several years.This is because they have waxy layers that cover the leaves and store maximum water for the periods of no availability.
- Some plants have hair on the surface of stems that trap maximum heat and protect the plant from heat and extreme forms of wind. For example: Arctic crocus.
- Desert plants not only have physiological but also morphological adaptations to survive heat stress and shortage of water. Their stems, roots and leaves are fleshy and help them to store water for a large period of time. For example: Cactus
- Many desert plants like <em>xerophytic bromeliads</em> and <em>epiphytic orchids </em>contain a system alternate of photosynthesis called CAM (Crassulacean Acid Metabolism). This process helps the plant to open the stomata at night for exchange of gases and accumulate CO2. In day, stomata are closed and the CO2 is used for photosynthesis. This is an adaptation, because during night when temperature is low, CAM plants lose less water as compared to what normal plants lose during day.
- Some plants have extremely large roots that absorb maximum water from soil and compensate the plant's loss of water due to heat. For example: Phreatophytes.
- Some Perennial plants have adapted the mechanism to stay in condition of rest or dormant during extreme heat. They get back to normal life when weather become a bit better.
Hope it helps! :)
The answer is the butter contains a new arrangement of atoms.
When melting, the atoms breaks bonds between them, they spread further apart and therefore became liquid.
For A, butter does not change into another substance, nothing is added or combined.
For C, butter can turn into a solid again if we cool it down below it's melting point.
For D, butter still contains the same number of atoms, again, only they became further apart.
Therefore the answer is B.
Answer:
Capillary beds: Capillary beds are the site of nutrient and oxygen delivery to tissues.
Explanation:
Capillary beds are part of a bigger system in the human body: circulatory system, whicis also called vascular or cardiovascular system. It is connected with other systems such as the respiratory and the excretory system.
Capillary beds <em>don't have a total cross-sectional area much smaller than the total cross-sectional area of major arterie and they don't join of arteries and veins. </em>Actually, the capillaries are the ones that connect arteries and veins.
Capillary beds are the site of nutrient and oxygen delivery to tissues. A capillary bed is a network full of capillaries. In this space there is a fluid exchange. And the more metabolic activity a cell has, the more capillaries are needed for a right and sufficient supply.