Which of the following describes the properties that allow capillaries to exchange gas between blood cells and surrounding tissue? a. Capillaries are short vessels with thin walls that create strong pressures forcing gas-infused blood to diffuse to the surrounding tissue.
b. Capillaries have thin walls and narrow diameters so that blood cells come close to the thin walls, across which gases can diffuse to surrounding tissue.
c. Capillaries have valves along their walls that allow blood cells to move through them to surrounding tissue, where gas exchange can occur.
d. Capillaries regulate the pressure of blood within them so that a steady stream of gas-infused blood cells passes into the surrounding tissue.

Answer:

the male part of a flower is called the stamen, it consists of a long slender stalk, the filament, with a two-lobed anther at the tip.

the female part of a flower is called the pistil, it consists of the stigma, the style, the overy and the ovule.

The answer to the questions are :

• Ocean Temperature, Carbon Dioxide, Air Temperature
• Carbon Dioxide Levels
• Kinds Of Plants.
• Kinds Of Plants, or Rainfall.

What do scientists learn form their studies  ?

The scientists learn from the ice cores about the air and other ocean temperatures and also get to know about the Carbon dioxide levels. The scientists studying Foraminifera get to learn about the amount of carbon dioxide in the air. By analysis of the pollen they learn about the changes in vegetation. From the tree rings, they learn about the tress and weather conditions.

Find out more information about the scientists.

brainly.com/question/21750948.

Final answer:

Scientists can learn about past air temperatures and carbon dioxide levels from ice cores, past ocean temperatures from chemical isotopes in foraminifera, historical plant types from fossilized pollen grains, and past air temperatures and rainfall from tree ring patterns.

Explanation:

By analyzing different proxies, scientists can deduce valuable information about Earth's past climate and environmental conditions. Here are the specific insights gained from the proxies mentioned:

• Ice: Studying ice cores, especially from Antarctic ice, enables scientists to determine historical air temperature, carbon dioxide levels, and more by examining trapped air bubbles and biological substances.
• Chemical isotopes in Foraminifera: By analyzing these isotopes, scientists can deduce past ocean temperatures based on the coiling direction of the Foraminifera's shells found in sediment cores.
• Fossilized pollen grains: These can indicate the kinds of plants that were present historically, which, in turn, reflects climate conditions and local ecosystems.
• Tree rings: The number and characteristics of annual rings in trees can reveal historical air temperature and rainfall patterns, as well as environmental conditions and events like droughts or volcanic eruptions.

D) protective coloration sssssssssssssssssssssssssss

Answer:

Since blocking an enzyme's activity can kill a pathogen or correct a metabolic imbalance, many drugs are enzyme inhibitors. They are also used in pesticides.

Explanation:

Answer:

True

Explanation:

Since blocking an enzyme's activity can kill a pathogen or correct a metabolic imbalance, many drugs are enzyme inhibitors. They are also used in pesticides. The binding of an inhibitor can stop a substrate from entering the enzyme's active site and/or hinder the enzyme from catalyzing its reaction.