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Softa [21]
2 years ago
9

Some kinds of algae produce toxins. A. True B. False

Biology
2 answers:
Lady_Fox [76]2 years ago
8 0

Answer:

a

Explanation:

because i have a fish tank and once we got my algee tested and it cape back toxic

Gnoma [55]2 years ago
3 0

Answer:

A

Explanation:

Some release algal toxins that can be harmful to aquatic and human life.

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Erythrocytes live for a maximum of.......days whereas platelets live for ....... days
Tomtit [17]

Answer:

120 \:  days;10  \: days.

Explanation:

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5 0
3 years ago
The dissolved sugars produces in the leaves of a maple tree move to the trees roots through the??
Whitepunk [10]

The dissolved sugars produced in the leaves of a maple tree move to the roots through the<em><u> phloem</u></em>. It is a tissue that transports nutrients to where it is needed

Hope it helps:)

3 0
3 years ago
Read 2 more answers
Time on earth is divided into 6 eras. Three are considered "Precambrian" Which eras are NOT Precambrian?
bulgar [2K]

Explanation:

<u>the  Paleozoic Era </u>

The Precambrian era describes a period of time that pre-dates Cambrian. This time typically references the entire period of the history of earth before the formation of rocks containing identifiable fossils occurred. It covers the majority of Earth’s history and is divided into the Hadean, Archean and the Proterozoic era.

Just before the Cambrian eruption, in the  Paleozoic Era the environment was oxygenated, culminating in an explosion of new life in the Proteozoic Eon (2500-541 million years ago) in the form of primitive blue-green algae named cyanobacteria and oxygen based species. Multicellular species followed later, along with structure at higher levels, and complex life. Oxygen levels grew gradually over this period of time, from low levels.

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

8 0
3 years ago
Genetics is defined as ___
Vera_Pavlovna [14]
The answer is B) the science of heredity
7 0
3 years ago
It is a winter day in Florida, and the temperature is 40°F in the morning. While you are walking to class, your body uses a nega
zhannawk [14.2K]

Answer:

negative feedback

Explanation:

The negative feedback system is the most common in the body, being considered by many authors the primary mechanism for the maintenance of homeostasis. It causes a negative change from the initial change, that is, a stimulus contrary to the one that led to the imbalance. In the case of the above question, when the ambient temperature increased, your body began to sweat to lower the temperature, that is, your body is trying to make a stimulus contrary to what is happening in the environment, so we can state that your body is going through a negative feedback system.

5 0
3 years ago
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