The sum of ages of two brothers is 22 years six years ago the product of their ages was 21 years. find the age of the brother

Is lung carry out gas exchange a cell, tissue, organ, or organ system

A gardener places extra nutrients in the soil of a flower bed to make the flower grow faster. through which tissue would the nutrients first move into the flower?

One of the criteria in the prompt above has been mis-typed. Correct the erroneous phrase so evolution will NOT occur. A) (5) There is sexual selection. B) (1) Mutation occurs within the population. C) (4) The fittest members of the population breed.

Where is the greatest distance between the water table and the ground found

What does a sperm cell contribute to an embryo?

Why is fresh water a limited resource? Groundwater is too difficult to access Most water covering Earth is salt water. The supply of water on Earth decreases over time. Too much water is wasted on irrigation

Which sentences describe the differences between photosynthesis and cellular respiration

Compared to most other substances, a great deal of heat is needed to raise the temperature of water by a given amount. This is because water A. is an acid. B. readily forms solutions. C. acts as a buffer. D. has a high specific heat capacity.

Question 1 What is used to classify the layers of the atmosphere? A Differences among temperature altitude, and weather B Differences among altitude, wind speed, and weather C Differences among temperature, air pressure, and density D How far away

Which had the greatest impact on the temperature the Earth's atmospher?